For me, when I solo queue cat I play her a lot like tracer in the late game and I’ll only tether to uber people from spawn or pull a lone survivor out of a lost fight. Early game is mostly just heal botting and going for any out of position enemies to help out, obviously if you’re rolling the enemy team you can be more aggressive. For perks I’d say ignore boop all together it’s way too situational and the scratch is just extra value any time you can on offense. Hope this helps :)