After have taking "Some" of the comments to hart, i have unfortunately now have to take the dissension to give up.
Even With my "Inability" and With a lot of knowledge gap managed to get a dual boot a NVMe system and have it to run OK for a long time. Thank you for all help given.
Ok, I vas asking for that.. and I can only apologise for being inadequate. I am doing my best to learn and try to read through forums before I do ask for help. Cant thank you enough for help given.
Have found a config.plist that boots with right resolution. It also now shows me my Broadcom with both wifi and bluetooth.
The boot is slower than before and the mouse is not working as well as before so (have to click several times for it to work) I think there is something that is still wrong...