I think the BIGGEST thing you need to do for yourself is to stop being afraid of being alone. Being single is WONDERFUL sometimes. I went through a period of my life where I was single for 10 years, and now I’ve been single again for 2.5. There are just as many benefits to being single as there are to being in a relationship; the benefits are just different. So if you do end up alone again, just find the ways that being single really benefits you. Doing that takes a TON of pressure and anxiety off when it comes to relationships because you won’t care so much whether it works out or doesn’t because you know you’ll be absolutely fine either way.
Other than that, over the next few days, just accept what is in the present and try not to worry about the future at the moment. I know, easier said than done. But just know that you deserve a GENUINE connection, and those can’t be forced. You’re also right that meeting online does take more work and more talking for that connection to develop and you deserve someone who will put in that effort before writing things off. This talk will help you both decide whether each of you is willing to put in that effort, and if one of you isn’t, well it wouldn’t have been a good match anyway. Try to go into this meeting, ready to accept either outcome and know that you’ll be fine with either way… and know that the point of the meeting is to figure out whether you’re both on the same page about building something that will work well for both of your needs rather. The great thing about this is that doing this now will keep you both from wasting each other’s time if you AREN’T on the same page, and if you find out you are, you’ve got a wonderful starting point built on good communication. Win/win either way!