I feel hopelessly stuck

This is mostly just a rant but if anyone has any suggestions for directions/skills/trainings/jobs they are more than welcome!

I just got a rejection for a job I really, really wanted and I feel devestated. I'm not happy in my current job. I haven't been happy in my previous jobs. And the big issue is: I have no idea what I want or what I can do. And I beat myself up for not even knowing what I want

I have never been diagnosed (looking into it but it's hard to find out where to go) but I suspect I may have ADHD. Whether I actually have it or not, the major problems I have in jobs is a) I find it extremely hard to motivate myself to do something I'm not interested it and b) I get bored easily. (I know point a is difficult for everyone, but with ADHD it is even more so.) Every job I've had so far was just focused on 1 thing, and it's just not stimulating/challenging enough for me. 3 years ago I even got to a point where I was exhausted from boredom. I also think I am fairly smart, and I always have this nagging feeling of "I can do more than this." If only I knew what it is that I can do. I try to take on extra tasks to get a bit more variety in my job, but it's still not enough. They are mostly just little tasks that break up the monotomy a bit, but they're not exactly challenging either.

I have a degree in translation but honestly I don't even know how I ever made it through my studies. With a lot of stuggling. I would be bored out of my mind as a full time translator. And I do not have the organisational skills/motivation/self confidence to freelance part time while doing something else the rest of the time. (If only I'd been diagnosed with ADHD when I was younger, I might have realised this field was not for me!)

I also live in a foreign country and although I am fluent in the language, I'm not a native speaker. So any job that requires excellent language skills my brain goes "nope, not for me!" So I've been focusing on looking for jobs that require my native language. But I guess the main reason for this strategy is I just don't know what the hell to look for, because I don't know what I want and I don't have any special skills, other than translation, which I don't want to do. So far I have worked mostly in content writing and customer service. I would absolutely be willing to try something else, or even move for the perfect job, but how do I find that job when I don't know what I'm looking for? I would have to be really lucky to just stumble upon a job that interests me. I did with this job I recently applied for, but I didn't even get through the 1st round. Which is why the rejection is so hard on me.

I wish I hadn't left my previous job in customer service. I was so desperate to leave because I was sick of all the complaining and there were too many issues in the company that were out of our hands, but still ended up with CS to deal with. But my current job makes me feel even worse.

In previous jobs, I've always been the one learn quickly, work quickly, deliver high quality work, get lots of positive feedback, often been the one co-workers come to with questions and sort of "managing behind the scenes" - but I never made it to an actual promotion so it's not on my CV. And thanks to imposter syndrome, I can't write about that in my cover letter either. (Oh look, imposter syndrome, there's another issue why I can't find a job!)

I've been looking into learning new things, but being so miserable in my current job makes it hard to get excited about anything. It's all just "meh". I really WANT to learn in theory, but I need it to be something I'm really interested in for it to work out. I'm also worried about starting something,
spending money on it and then losing interest. Wouldn't be the first time. I saw an ad for a vegan nutritionist course on Facebook/Instagram and that sounded interesting, but I'm skeptical about all ads I see on there.

So yeah, like I said, mostly just a rant, because I don't expect anyone else to know what I want, if I don't even know myself (If anyone does feel like offering suggestions - IT or marketing are out.)