New here! 4 months into my cancer journey.....

I have a Gleason score of 8(4+4). My PSA was 4-5 for several years then took off earlier this past spring to 16. PET scan showed no spread to the lymph nodes. My urologist ordered both of these and he is a certified "cancer urologist"(not sure about the terminology here!).
Started radiation 2 weeks ago and Orgovyx therapies about 2 months ago. I was told that hormone therapy could be 6 months to 2 years for my (aggressive) cancer type. Scheduled for 28 radiation treatments (5 per week) ending in mid November.
As I understand it, the radiation therapy destroys cancer DNA ) and other DNA in other body cells, too), but your body can fix its DNA, cancer cells cannot.
Have had some small issues with hot flashes, but nothing intolerable. Basically, at this stage trying to understand what is ahead. My radiation oncologist said PSA count will determine when I can get off the Orgovyx.
Any input is greatly appreciated. And, please, correct any misunderstandings I may have!