How do i choose an agent like really?

Little bit o context ive been playing val for a couple years on and off kinda my pc had a hardrive failure and alot of other personal issues and so ive always "liked playing duelists" which is just me putting kills above everything else and i feel like my thoughts on agent picking are clouded by what agents could i get the most kills in. I struggle with alot of fast decision making partially because i do struggle with adhd alot. Butt i was looking for some recommendations on agents to play and to (hopefully) main.