Switching from university of applied sciences to university?

My situation is really difficult for me right now. I want to talk about it, but I'm still hoping for some advice or a personal anecdote or something.

After graduating from high school, I took a six-month break and started studying mechanical engineering at a technical college in the summer semester, since university only starts in the winter semester. Now I'm here, and I'm at my wits' end. The topics aren't terribly difficult (so they're easily doable with preparation), but I'm having a really hard time motivating myself to do anything. For at least half the time so far, I've barely done any real work and barely done any proper revision. I was having a huge problem figuring out how to work (I used a tablet for 1/3, then switched to a convertible, and then I realized I had no overview at all and went back to flipping through pages).

I'm also having some trouble with the topics. The topics at school were so much more interesting than here. There was a lot more variety, and I simply enjoyed it better.

I also have problems with my work, or rather, I can't seem to get anything done when I sit down and want to do something. It's super frustrating.

Then I kind of avoid contact with people from my semester because I'll be transferring to university anyway, and that makes me feel super lonely :/. I know it's just me. But I find the people from this year really weird. Maybe I'm biased, but I can't really connect with anyone (because I don't share any interests, or we're not on the same wavelength).

I do want to transfer to university because I'm hoping to meet new people, or maybe I'll just get along better with the people there, but who knows, maybe I'll completely screw up.

Now I'm really worried that I won't be able to do it at university at all, because the topics are so much more extensive and also more difficult (if I'm already having so much trouble). Above all, I did really well in school and got really good grades, but I somehow don't like the new environment.

Everything is kind of shit and maybe I'm just worrying too much, but if it continues like this I don't know what to do.

Did you also have problems at the beginning of your studies and what encouraged you to continue and not worry?

Were you afraid of failure and how did you cope with the stress?

Thanks to everyone who took the time to read this