aiming on this game feels like such a pain compared to 4:3 stretched cs, i've been playing for about 8 months now and i still cant frag like in cs, anyone got the same issue?

Here is the link: https://imgur.com/a/aqZSlPU He doesnt say anything about that but the team members said he is a rioter. It is happened in Istanbul server. What do you guys thinking? It was happened one day ago.