Bri,
I hope you find some peace by doing this.
Hopefully, when life returns to normal and you can really start living again (eg. watching good rugby games, which I know you enjoy so much), and being able to do all the things and go to places you'd always planned to go in your retirement, life may not seem too bad.
It's true that lockdown has caused us all to think about things too much and it's so easy to imagine the worst is going to happen all the time. When this is all over, it will be easier than it is now.
Try not to think about the possibility that your cancer has come back. If it has, then you can deal with that when you need to, don't let it ruin what's happening today.
I already know the way my cancer journey is going. It's incurable and I can't really do anything about it. In a strange way, I've accepted what is going to happen so I never really worry about it. Since I started to think that way, I feel a lot happier than I once was. I no longer take Sertraline (my "happy" pills) and haven't missed them.
I think I have "accepted" the way things are going to go for me. I think it was an important step for me.
I'm sorry you've decided to leave this site, you will be missed but can always come back when you feel the time is right.
Please have your PSA checked when you feel able, you don't want to miss the opportunity of a "cure".
Take care and thanks for all the help and support you have given, not only to me but everyone on this site.
Steve