This is just a suggestion to anyone only playing Duelists just for their abilities. If you're going to insta-lock someone like Reyna, who in my opinion should always be 1st or 2nd entry (1st/2nd on site) then you NEED TO be getting kills to be effective in a game. I'm not saying this to discourage you from learning a duelist, but don't pick someone like Reyna or Phoenix if you're not comfortable putting yourself in front of your Omen or Cypher to get that opening frag.

Valorant is different from CSGO in that the agents have SET roles instead of everyone having the same nades, smokes, flashes. If you want to sit back and pick off lurkers then play literally anyone but the person with flashes that go through walls (Reyna).