Step : 1 is to make sure you have your phone number linked to steam it helps alot.
Get alot of commends.

Be positive against ur teammates and enemies and yty to get them to commend you. Don't spam report people just because they do fishy plays be 100% sure.

Invest in your steam level.

Get more hours played. Play more competetive matches without getting reported.
Dont hack on other games. Don't grief.
Try to boost your rep. Be nice and help people. Try to gather as many +reps as you can.
Watch overwatch cases but make sure you dont report without watching and being sure.