Is it possible to use fedora toolbox in manjaro?

If yes, then how? or is it better to stick with docker?

Installing shouldn’t be a problem:

sudo pacman -S toolbox

I don’t know what you exactly supposing to do… So use what fits you better.

~ >>> toolbox create
Error: /etc/subgid and /etc/subuid don’t have entries for user
See the podman(1), subgid(5), subuid(5) and usermod(8) manuals for more