Looking for a gym- first time training..

Hi guys
I’m planning to join a gym-
I’ve been to kris gethins - they’re showing a price of 3.5k per month with a deposit of 3.5k. But they’ve clearly told me trainers only help for 1st 2 trial days then they help if you take PT which i cannot afford.

So plz help me with other options?

Also- I’m open to sports as well instead of gym- like lawn tennis, badminton. Learning to kickbox etc!

Plz recommend - I’m feeling shy of joining alone in a new place so your recommendations will actually be very helpful!