i replaced the .mozilla prefix to waterfox and i think theres no way to install it in waterfox but would be great you can, i think its possible because its firefox esr, currently using waterfox g3
I think you can open the dirictory by going tothe url about:profiles & clicking open in files or something. From there you might try the manual install?
i replaced the .mozilla prefix to waterfox and i think theres no way to install it in waterfox but would be great you can, i think its possible because its firefox esr, currently using waterfox g3