Well, I'm not surprised in all honesty.

The server this and my other sites are hosted on has started to go offline for 10 - 240 minutes per day, at (seemingly?) random times.

About 15 years ago (christ, really!?) UK2 moved me from my original server when I upgraded my hosting and since then it's been going to utter crap. I - finally - got them to move me about within the last year to another server after constant down times, except within the last week it's all gone to crap again.

The difference is that before this server change, the sites were going offline for (typically) a few minutes a time numerous times per day around two days out of the week, but on this new server the sites are going offline for extended periods of time once or twice a day every other day.

Compared to other hosting providers, UK2 isn't actually that cheap; I haven't switched providers because there's two decades worth of infrastructure I've built-up with UK2 that I really can't be arsed sorting out.