New Doomfist main

Hey Doomfisters!! I have been wanting to play Doom for a long time but I’m too scared to actually play him. For some context, I usually play support (usually Kiri/Juno) and I’m bad at playing dive style characters. Anyone have some tips or suggestions on how to manage cooldowns and also make an impact? I do play a lot of doom parkour and am familiar with some tech, but that’s not nearly enough to actually play him in games. So if anyone has some tips I would be eternally grateful :) thank you!!