Has anyone moved back to America recently?

I'm posting here because I really have no one else to talk to about this. I've been in the UK almost 5 years and I am in the process of getting my application together to apply for ILR next month. But something is just holding me back.

My whole plan was to get ILR and buy myself a little time to decide if I want to stay here. It's really been a mixed bag. I love being able to go to Paris in 2 hours, but I'm working a minimum wage job after making six figures in America six years ago so extensive travel isn't really in the cards. I feel like I'm barely surviving here financially and I live in the suburbs with no kids so it's been really hard to make friends or meet people because Brits in general are not welcoming or friendly esp to immigrants (not really looking to argue this point). And I haven't been in the financial shape to take classes or do a lot of things where it is easier to meet people (including just basic travel into London as much as I would like). I love the public transportation (even though the infrastructure here is a joke) and I do like not paying for healthcare, but the NHS has been a real struggle as well. The weather is tough and I'm nervous about the political situation. I think my fantasy life was being able to split time between both here and America but I don't see that being financially viable any time soon. And £3300 for ILR is not a small amount of money for me.

I keep thinking well if I was able to find a bit more community or friends or something, things could come together but I'm struggling to even visualise a life here that I would want. And with the COL it just feels like the struggle to survive is never going to end (not that it's much better back home either).

America is obviously a shit show right now, which was one of the reasons I left, even though I am from the West Coast. The idea of going home is attractive, even if I think I'm nostalgic for a place that doesn't exist any more. I don't have a lot of friends left back home but I do have a few aging relatives. If I moved home I would essentially be becoming a caretaker for one and have to deal with another relative who is very, very difficult. Also the prospect of having to get a drivers license again (mine lapsed), not having credit, a job, place to live, car or healthcare is staggering when I think about it. I'm also 42 and sold everyone I owned to move over here so feels like I would be starting completely over AGAIN. And I have a 15 year old dog and I am terrified about having to take her on that 24 hour journey to get home again. I am actually really concerned she might not make it.

I guess my question is if anyone has moved back recently how hard was it to re-assimilate and do you regret not staying? I really don't want to make a decision that I'm going to regret in 5-10 years which is making it a really difficult decision. Like is going through all of this just to get dual citizenship really worth it "just to have it"?

* PLEASE BE KIND IN THE COMMENTS *