I only send GG messages if they game is actually good. I always send GG messages if the match is close whether I win or lose. Also if I feel like my opponent put up a decent fight I will still send them a GG message. I played a Dhalsim I beat 2-0 but both matches were close and went to the final round. So I sent him a GG message.
I played a Zangief player that I beat 2-1. The first two sets were close and I bodied him in the third. I still sent him a GG because the first two sets were just off the chain. Then I adapted to his play style and he started to become predictable. Sometimes I lose when I become too predictable. For example I love to use Vega’s C.MK on peoples wake up after a knock down. This gets me blown up A LOT by st.LP’s that hit crouchers, reversal DP’s, and wake up throws because cr.MK has 7 frames of start up. I love to jump air to air MK with Vega to make up for my lack of anti-airs on hte ground. This gets me anti-aired a lot and sometimes it leads to a big combo. I sweep too fucking much as well because I think I’m at a safe distance. I had a Ryu player do St. MP -> st. MP xxx hadouken xxx super on me for doing that shit. That was fucking painful to watch. In spite of that I still sent him a message saying “Good game, that was a sweet punish” because I got what I deserved. Was I salty after that KO? Absolutely. However, I’ve also done way worse. I’ve done 50% crush counter punishes that decided the game when I was at the last pixel. You just have to take the good with the bad. Street Fighter ain’t no fair weather game. When it rains niggas get wet out this motherfucker. Stay dry dummy.
The only way those losses you accrued are meaningless is if you didn’t learn from them. You gotta think about why you lost every time you lose. If you can’t figure out why you lost then watch your replays. It will be clear as day then.
As a matter of fact, OP. I want you to watch every one of those replays. Yeah, I’m talking about those 13 games you failed to win one of. Watch that shit, analyze it and think critically about why you lost. Look at your opponent wailing on you, watch what he does, look for your weaknesses and try to refine them. There’s a lot to be learned from watching yourself get served.
TL;DR: Everyone loses. It fucking happens. Learn from your losses, watch the replays, refine your game and improve.