What do you actually want to do? There's a massive disconnect between wanting to change your life and considering going on a tv programme to do that, and being closed down and refusing to engage with any ideas.
I don't know if you'll ever find someone, and I don't know if you'll find happiness without someone. I do know with absolute certainty that you won't do either of those things if you carry on with this mix of desperate hope and solid negativity.
Perhaps this tv advert is prompting you towards a crossroads where you decide what you do next?
I get the weariness of having travelled this path for so many years. Having tried everything you can think of, it's hard to remain open to ideas when people suggest everything you've tried and dismissed before. It becomes a lonely path.
But a fresh perspective is really the only thing that can help, if you've exhausted all ideas from your own perspective.
I think going through a dating agency but with the input and support of a life coach might help 'unblock' the problem and really get you approaching dating and engaging with people in a different way. But that won't work unless you can be open to it, if you turn that closed disnissiveness on, you'll not get very far. You need to find a middle ground where it's about 'generous critical thinking', where you learn from past experiences, rather than dismiss the whole thing out of hand.
Things that haven't worked on the past might work better under different circumstances. Things that didn't work then might work if done in a different way, or done in combination with other ideas too.
I do wonder that you've not discussed any of this with your friends. Do you talk about any other 'deep' stuff with them? Do you have close friends? People you let in to your self?
You say you don't see the point in talking to friends about this stuff. But surely, it's not about a point or a purpose, it's about closeness, intimacy and caring for one another? Maybe you'd feel better to talk about it? Or is it something you keep so locked away and hidden because it's just too upsetting?
I'm just wondering if there's anything else in the way you hold back from friends? Is there always a block between you and others? I don't mean to sound rude, I'm just wondering if there's a clue in this that might help you? If you do find it hard to let people in, to be close, intimate, this might be effecting how you come across to people in general?