Meta champs or out of meta champs
Recently I came back from hiatus of League, and now I'm just playing some random champions for fun. Although it's not really that much I went from S3 to S2 with AP Nidalee mid. I check all these "tier lists" saying Riven is a god tier top right now, and seeing as she is a good champion to main, I'm not sure what to do rn. Should I go to my old champions and champions that are out of meta and get great with them or just abuse like these op champs? Thnx