How do i even enjoy this game anymore

First 30 hours i liked it but it started getting kinda boring just constantly getting killed by snipers, campers, and helis, helis and planes are the worst because basically no one can do anything about them other than engineers. Also you basically can't play assault unless you plan on camping. The game is more vehicle than gun based. Also i hate the full of snipers open maps and when i play tdm even then theres way too much people just using m320's and law's and at this point i think these grenade/rocket launchers are so strong the regular guns are weak compared to them. Tell me if im doing something wrong or is the game doing something wrong?