I want to win more.

I understand that losing helps you learn more than winning, but when I'm losing about 8 times as many games as I'm winning, it's becoming super depressing, and is becoming to the point that it's making my ego drop dramatically. Is there anything more I can do to get better?

I look my losses twice and my wins once on baron replays at 2x speeds. I spend a lot of time watching pro players play their games, and I try to implement things that they do into my games. I look at videos of direct tips to get better. I play a lot of games, and in normals I win a lot more than in Ranked, and it's really depressing. My main mistakes are probably trying to be more focused on myself. For instance when my support is standing near me, and then I go forward and my support randomly falls back to go get a ward in without me realizing it, I die immediately. It's just really upsetting.

Is there really any way for me to get better, please let me know in the comments, and if you'd mind possibly coaching me a little bit, that would be appreciative!