What alternative software do you think could be used instead of Kleopatra and KeyPassXC?
I didn't try any other alternatives, thus I can not take the responsibility for the consequences of the use of other software. However to generate your security key you may use (as I did) the following commands instead using Kleopatra for this purpose:
gpg --expert --full-gen-key
Choose 9
choose 1
choose 0
3
gpg --export-secret-key --armor <KeyID>