Why do you keep saying you give up? Why are you bending over backwards to try and please men you haven’t even met? When a man is really interested in you, you won’t have to try. He will be chasing you for dates and hang outs.
Why is it your responsibility to solve this weird man’s (presumably sexual) frustration? You aren’t in any kind of relationship. You sound very naive and vulnerable OP. You should have been repulsed by a man you don’t know wanting your videos. And when he backed off why did you still send some? He can find plenty of stuff online if he wants to get off.
Please adopt this rule: don’t send personal photos or videos to ANY man ever. They won’t like you more for it. If they are your boyfriend they get the real thing and have no need for them.
Also, chatting to someone online, even for a few weeks, does not mean you know them.
You don’t seem to have good boundaries with OLD and if you carry on I think you’ll put yourself in dangerous situations.
Another rule you could adopt, even if you are just looking for FWB, is the first couple of meet ups should be for coffee. If they won’t meet for a coffee then they are wasting your time.
Another rule is only chat to someone online for a week maximum before arranging a coffee. If they won’t, they are not available and are wasting your time.
Please use this experience as a learning one. I hope you have completely deleted this weird man from your contacts.
Aim higher OP. Maybe avoid OLD for a while. Go out with friends and family and have fun. Take up new hobbies and interests. You will likely meet more people in real life that way.