Wofi ok. Rofi-Wayland great. Tofi awesome and enough for my use case.
Natural is totally unnatural.
I don’t do derivatives. Arch based distro? Just use Arch! Ubuntu, Mint, Pop or the hundreds alike, go Debian!
Rclone is awesome. Mega and PCloud got native clients that works great. Nextcloud is an alternative.
Fedora uses grubby to edit grub. Read documentation. Do some research.