Do what's right for you, your own career and livelihood. No one else is going to sort your life for you and asking the opinions of those who've had it easy (or easier than you) is useless. Most of them have no idea what some of us have had to go through since 2009. The rot in the industry started a long time ago and is now in the advanced stages. This cancer cannot be cured. Either become "part of the problem" or give up. If you give up and stay away from P2F, no one will realise or thank you for it. You'll end with no work at all, being forced to live away from home/family or best case flying the same old planes for measly pay with no chance of career progression no matter how many hours you have. If you do join a P2F scheme, you'll discover that hundreds in your position make this difficult choice every year. Some succeed, some don't (about 60/40 in my experience). The road is long and treacherous but in the long run you'll be a 2,000+ hour pilot with the right background and the right rating to gain employment on a medium category twin jet virtually anywhere in the world. The fact that you've had no line training provider even respond to you shows that the waiting lists are already huge and nobody wants your business. A 737 rating was perhaps not the best choice.
Good luck