Questions from a returning player!!

I've always loved him, but I recently just got back to him after being a Venti main.. I was a Chongyun main back in the day and I wanted to chase the nostalgia haha The only problem is that, being a returning player, I don't have many of the new characters starting from Fontaine. Can anyone help me build this baby?? I need good team comp recommendations and build recommendations in general, thank you so much!!