It would be better for your nerves to just do a normal GNU/Linux installation. There are too many ways the installation can go wrong:
replace swap partition with ISO contents
For example, Ubuntu ISO has a size of 5.7G. But my swap, which you previously deactivated, was 4G. Either 2G, or it didn’t exist at all.
move user data from C:/ to other partition
The other partition may not exist or may have capacity smaller than C:/.
replace C:/ with linux
The installed Linux must also be stored somewhere. And there is also a copy partition for C. The same problem of lack of space.
move user data to /home/$username
From %APPDATA%? You would have to be a know-it-all to resolve the location paths and configuration names of literally every existing program.
reboot into linux
And it is at this moment that Windows will completely randomly decide to update and rewrite the bootloader :)
Have you tried Debian?