If you are looking for a boyfriend or girlfriend, you can do what you like, exercise yourself, or be a coach, or change jobs with other coaches, or create opportunities to meet.
Ordinary ordinary looking for someone:
How big is the gym? Search by the side, or wait for him, if you want to enter, you have to leave.
Or get on well with the girl at the front desk. Ask if the person you are looking for has come.
Then there is tracking. Follow your friends and you'll find it.
This question is too vague.