I have upgraded 2 laptops that are ancient by today's standards.
1st, use Macrium Reflect Free to create an image of your current system. That way it is an easy restore if the upgrade doesn't work.
2nd, Make a separate backup of your files
3rd, download a W11 ISO image.
4rd, download RUFUS.
5th, Get a USB stick = I use a 16GB one. 8GB MIGHT work.
6th, follow RUFUS directions to create a bootable USB stick with the bypass fix
7th, set the computer to boot from the stick and proceed to do a clean install. You will delete the system partitions and recreate on new partition out of the unallocated space. If you have a D: partition, DO NOT DELETE IT. Just make sure the C: partition is large enough. Mine is about 100GB, but it depends on you.
8th, test the operation. If all is well, proceed.
9th, reinstall your programs
10th, Reinstall your files.
FYI, I prefer to create another partition on my drive (D:) and place all my files on it. It requires changing the location of the user folder, but it is easy.
If you do that b4 you start, You won't have to reinstall your files, since the W11 install only touches Drive C:.