Damage output in BG

Anyone else having trouble with this? Not saying anything is wrong with the game. I’m positive there’s a skill I lack.

I haven’t knocked an opponent out yet this season. It doesn’t seem like the other players have any trouble with taking my champs out.

I’ve spent quite a bit redistributing my mastery points several times. Each time I’ve been able to progress in other areas. Just reached TB last week. I’ve just started being able to clear threat level 4 content without too much frustration more consistently. I still have soooo much to improve on before I’m confident in saying I’m decent in this game.

All that to say, I need help!

Any tips?

Thanks!