Hizwlan,
I am so sorry to hear that you are facing this. I am in a very different position to you (55, retired/carer, lumpectomy) but I wanted to respond anyway just to let you know that you are not alone.
Christina_BCNA has suggested some great resources that are well worth accessing.
Feeling overwhelmed is totally normal when facing cancer treatment options. No matter what decisions you arrive at, once made keep moving forward without looking back or second guessing what might have been if you had made different decisions - that way lies madness. Sometimes you just need to go with the “least worst option” and then trust your treatment team.
Hang in there 🌸