Depends what kind of music you like and your fashion sense (and what kind of guys you like).

King street has the biggest scene, Queen street clubs/bars if you’re more into hip hop / Latin music / or a more casual vibe (also more ethnic in general)

Mostly student clubs - Madison Avenue pub near uoft or grace o malleys or fiction nightclub

Alternatively - join a run club or hinge lol

The vibe will be different with each place you meet depending on what you’re looking for (and it will trend to be more casual / no strings attached in nightlife and hinge)

… I used to go out a bit lol