(reposting since reddit filteres deleted my last post)

I selected the field of Fitness Trainer 4 years ago with the goal of becoming a freelance personal trainer. So, I got certified and started working the day I received the certification. I worked as a general personal trainer in non-local gyms.First gym I worked at was for learning purposes since the certification doesn't teach everything. I was pretty bad at pitching personal training because of my introverted personality. I kept learning and teaching without any expectations and somehow without any sales pitching I got 2 PTs but because of the lockdown I couldn't complete all sessions the gym warned me not to contact the members for out of the gym training.So, I went to another gym that had better salary and better equipment. Everything was going well, was also getting PTs here without any sales pitching, and clients were renewing the PT aswell. But the gym kept changing the manager, and the managers kept changing rules. Manager and Sales department started making false promises to new members to get the membership sell and increase their commision. Their demands kept increasing, ie. giving free group sessions to new members for a month, taking videos of members' workout for gym's Instgram page, working overtime for no extra salary, salary being cut off by 50% if PTs were above 5 and by 100% if above 10, etc. This was becoming too much on my both physical and mental health. And as a trainer at the end of the day I didn't even have enough energy to workout and the result was visible.Because of this I decided to quit the job of general trainer.

I decided to never work in a gym again and just became a freelancer. But as I mentioned earlier I am not good at all at sales, and have no idea how to gather PT clients. The clients that promised me that they will continue their PT in another gym are either not in bombay or have other reasons to not continue their workout.

So, how a freelance personal trainer who is not good at sales, should be gathering clients ?
I have tried websites like urbanpro/superprof, I really don't want to spend money just for making contact with a potential client.