I totally understand your concerns, @Taiyo.
I haven't been back to the UK since before covid due to strict entry requirements where I live. I knew quite a few people who travelled and quarantined at great expense last summer, mostly without serious problems. Financially it was a no-go for us, but even if we could afford it I couldn't face 2 weeks in a hotel room with my children
We've done it twice now at home and that was bad enough!
Over Christmas loads of my friends and neighbours went to the UK. Schools here even extended the holidays to accommodate this, as so many people had not returned to their home countries for a while and they wanted to give people long enough to make the trip. Requirements here had eased, so it was just testing and no quarantine unless positive.
Almost every family/person I know had problems. I can only think of 1 who had a visit not ruined by covid while in the UK, didn't get stuck there, and didn't have to quarantine here due to testing positive on arrival. It was a nightmare for most people. The lucky ones simply had their time in the UK ruined by isolating due to catching covid themselves, and therefore not being able to see all the people they'd planned to.
The unlucky ones either got stuck in the UK for several weeks due to testing positive when trying to leave, and having to wait til a PCR test ran negative (this can take some time after you actually have covid). This meant more weeks of missed school for their kids, and parents trying to work online with a massive time difference. Plus the expense of staying longer than planned.
Others made it back here only to test positive on arrival and be forced into either hotel or hospital quarantine (varying degrees of comfort/food etc!)
Some of these people say it was worth it and they will travel again this summer. Others say they won't until the restrictions allow home quarantine even for those who test positive on arrival (technically possible now, but depends who you know I think!)
I'm not considering it this summer, partly down to finances and partly down to the fear of one of us testing positive and then being sent to a hotel/hospital. Early on during covid, it was not unheard of for children to be separated from parents and although they say that doesn't happen anymore, it's not really a risk I'm going to take.
I was lucky that my mother came to visit over Christmas. I'll take that for now!
It sounds terrible but actually the longer we haven't visited for (nearly 4 years now as we didn't go the year before covid), the easier it has become.