RTry all the agents and pick what you like best even from fun perspective
Rif you have any experience from other fps games like cs i can help you pick
RSo if you like entry a.k.a being the first one to enter the site, go for duelist - reyna iso jett
RIf you like to play passive a.k.a mostly hold - Killjoy Cypher
RKayo is a good agent but you have to learn to utilize his spells correctly to get some value out of it