I get the idea since i was a diamond in these last 2 acts, & i know you will get to face ascendant rank which had peaked immortal before in these lobbies. and it felt like their shot is immensely better than you.
My only advice is just dont be sad about it, some people play this game as the 2nd/3rd fps game they play, so if theyre good at it, its quite normal no ?
Yes, there is some people who invest litlle to no time on the game and still master the aim & hone their game sense to the max but we should realize that this case is a minority.
I just checked your stats on the tracker and i dont think your bad. Youre quite the average or even a little above average & ITS NOT BAD. Many people on Vlr are silver / gold even tho they played so many hours.