I gotta say, upon closer inspection Yunohost looks way more elegant and complete a solution than I was picturing. Figured it'd mostly be premade apps ready to install but there's also built-in LDAP + email, let's encrypt certificates, integrated security features, the list goes on and on. If the execution is even remotely as smooth as the documentation suggests, Yunohost sounds great!
Yeah, Yunohost uses bare-metal installation form of application, so user can modify it how he wants. I use Yunohost for more than a year (I used it on Raspberry Pi 3B+, then i moved to HP 800 G3 Mini and now I use Asrock x300 with ryzen 7 5700G) and I build things around it. I have my own script for backups and uploading it on S3 bucket.