For what is worth, many people experience similar things. Especially with dating. You think you have connected with someone and they ghost you. Or maybe the ones answering back, turn out they are already married.
One thing that might help is that when you take pictures for dating apps, they should be taken by a friend at a time you are enjoying yourself. Maybe at a party or hicking or even playing videogames. Friends looks us with kind eyes and being happy bring that kind of energy.
Then it also helps taking the risk of being the one who asks out. Many times the answer would be no, but also, sometimes the answer can be yes. Dating apps help because swipe is easier than actually approaching in real life. Also, you don't see who swipe left.
At 35 you'll have pleny of opportunities even if you believe that is not the case. although I admit it is a tough time to be single, since many friends start having children.
Also, if you are looking for something that last more than a hock up, I would recommend dating apps where people can write whatever they want and ask questions about what people writes. People who want commitment ask questions and expect the other person to show interest in what they say.
Lastly, it is very important to have plans and things to do with more people, so you won't feel so lonely.
There is a lot of luck involved in meeting someone. Even more in meeting them at the right time. And then, there is some kind of extra luck in realizing when we have been lucky and take the opportunity. I mean, more than once I found out that someone liked me and I didn't even noticed. And by the time I noticed, they were with other person.
What I'm saying is that sometimes being depressed or down might blind us to some opportunities or good things we have going on. Start easy, think something that you could gift to yourself and might make you smile. For me it was a quick escapade to Barcelona. Once you know, treat yourself, enjoy and ask a friend to take a picture while you are happy/enjoying yourself.
So, what do you like? what makes you happy?