Hi OP. I was about to go to bed but couldn't resist popping back in here one final time and I saw your post.
I'm so sorry for how you're feeling. It's an awful time and the stress can feel relentless.
I wish I could say it's all going to immediately completely better. But whilst that might not be possible, please try not to feel hopeless.
There really is light at the end of the tunnel. It's a long tunnel but we're making progress.
The vaccines - especially with boosters are making a difference.
And we now have some very promising drug treatments - some are around 80% effective at preventing serious illness or death.
There's global demand for currently only limited supply - but in time (before 5 years) there will be much better availability.
We'll also have made progress in getting the rest of the world vaccinated.
We might have outbreaks over the next couple of years but then again we might not. It might be over much sooner. We might need annual boosters (especially the vulnerable) but that's fine. We already do that with the flu vaccine. We might also need some mitigations at times - perhaps masks during a mini outbreak and/or when sick, but that's been the norm in many East Asian countries for years with no effect on everyday life.
In the meantime I know services are busy but please try to speak to your GP and/or self refer if available in your area for counselling. Some emotional support could really help you. And could you discuss your concerns with your parents? They might be fine with LFTs (taken just before a visit, same day).
I know it's easier said than done but try not to despair. It's horrible and stressful and very tough right now but things will get better 