My first name is Alyssa, and it's incredibly common, even with that exact spelling. I'm pretty sure there were at least four other Alyssas in my graduating class in high school (some of whom were also an "Alyssa S", like I am), so there were always a lot of scenes like:
New teacher (or substitute) doing attendance: "Alyssa?"
Two voices in unison: "Which Alyssa."
Teacher: "Um... Alyssa S?"
Two voices: "Which Alyssa S."
(Question marks omitted to emphasize the dull tone in our voices because we were way too used to this treatment.) Anyway, at that point, if the teacher said the name properly, I knew it wasn't me. If they stuttered out a vague S sound and then failed to say anything else at all, I knew it was me -- but I'll get back to that later.
Anyway, my common first name also meant there were plenty of times when I'd hear someone call my name, only to turn around and realize they were talking to a different Alyssa that I didn't even know was near me. There have even been a few instances when people had to call my name a bunch of times before they were able to get my attention, because I just assumed they weren't referring to me. @_@ It wasn't super annoying, but it just kind of made my name feel... not mine, you know?
This is actually the reason why a lot of my IRL friends legitimately call me "Kaga". It started when I used to roleplay with a lot of IRL friends, so they were used to calling me "Kaga" from their interactions with me online, which then bled into real life a little bit, and then people I didn't know from roleplaying also started calling me "Kaga". o_o But I rolled with it, because I actually like that name. It just feels so much more... me. Alyssas are a dime a dozen, but there is only one Kaga. If I hear someone say "Kaga", I know it's me. Overall, it's just a very comforting name to me now.
I even entered a brief phase of my life where I would just straight-up introduce myself as "Kaga" IRL, because I liked that name more and I was totally ok with that eclipsing my real first name. Buuuut then it started to feel kind of weird hearing my college professors call me that, so I sort of shyed away from it, and now I'm in this weird state where a new person asks me my name and I honestly hesitate to think of what to say. O_O Because "Kaga" is the name my friends use, and it feels weird to hear my friends call me "Alyssa" -- but "Alyssa" is a better name to be used professionally, and it feels weird to hear "real adults" call me "Kaga". Not only that, but "Kaga" clearly isn't a normal name, so I get weird looks and sometimes a "Really?" when I introduce myself as that, and then I feel the need to explain myself like "Haha well my real name's Alyssa, but you can call me Kaga" and then that raises the obvious question of where that name came from, since it doesn't sound anything like my real name, but it also feels weird to just introduce myself as "Alyssa" because that feels too formal these days, and it just seems weird if this is happening while I'm surrounded by other friends who also call me "Kaga" -- soooo I basically hope that my friends will be the ones to introduce me and tell people my name so that I don't feel like I have to spend two minutes explaining my life story when all they did was ask for my first name. @_@
NOW ONTO MY LAST NAME, WHICH IS A TOTALLY DIFFERENT KIND OF CLUSTERFUCK.
I'm not actually going to say my last name, but I will tell you that it is A) rather long. Specifically, 11 letters long (which, for comparison, is the same number of letters as in "Mississippi"), and B) impossible to pronounce if you're just looking at it written down. Or at least, it seems like it's impossible to pronounce. It's actually very easy to say it once you know how -- but the weird spelling throws so many people off. There is a very easy way that it could be spelled that would make the name look about as easy to say as it actually is (in fact, I have some distant cousins who legally changed the spelling of our name to the way that it sounds -- which is exactly what I hope to do someday). But, because the spelling is a massive clusterfuck as it is, people tend to either A) look down at my name in horror when they see it written, and give up any attempt at pronouncing it, or B) mispronounce it in... really strange ways. Like, there are ways that I could understand how you'd mispronounce it, but, so often, I hear people throw in completely new syllables that have no place being there, with sounds that have no place being there. Like, it's astounding how often I hear people trying to add an 'M' or 'N' sound when there are no M's or N's, or anything even close to one, in my name. So I have no fucking clue where they're getting that from. @_@
Hell, when my dad died, our name was butchered just as badly -- with a weird 'M' sound and at least one extra syllable -- on the local news. He died, and you report it by making a complete mess of his name. Thanks.
So yeah tl;dr, I kind of completely hate my real name. :D My last name is a mess that I've always wanted to change, and my first name is just... a very awkward situation at this point. In general, I do prefer "Kaga" to "Alyssa", but "Kaga" still feels kinda weird in the professional world and being in limbo between the two is just... odd.