Ah, ok.

I think you are realizing that what you want and what you are ready for are 2 different things. I could see somebody picking up on that disconnect and passing on you because of it. Hence the mixed signals.

That said, it is has only been 6 months during a global pandemic. A couple dozen first dates is roughly a date a week. I don't see that as unsuccessful. At best, online dating introduces you to folks who might be a match for you that you may or may not have met in your daily life. Once you meet, the OLD part falls away and what happens after that is up to you. You have been meeting people.

Give it some time. In the meantime, give yourself permission to learn to love you better than ever before. Divorce is brutal and traumatic and difficult. It is a loss. It is okay to mourn. You don't have to "get back out there." It is okay if you aren't quite okay yet. Your FWB plan isn't horrible, but be careful.

My first and only FWB was with a guy, 40, fresh out of his divorce. It didn't end well because of that disconnect between what he wanted and he was ready for. Set boundaries, make rules and stick to them. It is not cool to expect to get without giving.