I know some Docker, even I built my own images, but I just don't really like Docker.

I would guess that you need to learn more about Docker usage in general, rather than just looking for a Docker Compose file

Yeah, I don't really like using Docker so I always go for easier option, but my friend uses Docker a lot and also had troubles with Overleaf.

Also, I’d like to point out that Overleaf’s hosting and pricing options are quite reasonable, especially if you’re working for a university or institution: https://www.overleaf.com/user/subscription/plans

I don't work for university, but I am a student that needs Latex. Overleaf free plan got really bad, even my thesis cannot be compiled now and Overleaf pricing isn't really great. Student pricing is only for annually subscription, so it is not ideal for me.

Adguard Home works really bad on RPi Zero and not as fast as PiHole on Rpi3B+. That's why Adguard is heavier for me.

I used both and Adguard looks more buggy for me. And also it is heavier.

Asrock X300 Mini with 2x HDD 2 TB 2,5" drives in Raid1, NVMe Samsung, 1 TB 2,5" HDD connected via USB and Zigbee gateway

It has place for two drives - one NVMe 2280 and one SATA 2,5". If you want something bigger, but still Mini, You can buy Asrock X300 DeskMini with AM4 socket. I have this with Ryzen 7 5700g. It offers two slots for 2280 NVMe drives and two slots for 2,5" SATA drives.

Yunohost or Snap. Snap catalogue of server apps is small but it offfers Home Assistant, Adguard home and Plex.

Wallabag for read-it-later articles and HedgeDoc for md notes

I don't know when you tried Nextcloud snap. I was using NC Snap on low tier VPS back in 2021 and 2022. For me it was really good experience, and I saw that a lot of people had the same opinion. Unfortunately, snapcraft lacks a lot of apps and even in that small group there are only a few apps that are supported.

Snap apps could be good for a lot of 'just works' stuff, but the app catalogue is tiny. Hardly any of the app catalogue is kept up to date.

I just telling why Yunohost will not switch to Docker. Running normal Docker app wouldn't be coherent with yunohost package managment. And how you can see, no containerization brings problem with updating some apps, not only with Lemmy, but - if I remember right - with Wallabag. Yunohost way of things has advantages and disadvantages. I use Yunohost for more than a year and I am not planning switch to Docker.

For PiHole it will be OK, but for Nextcloud or Jellyfin is too slow. It is better to buy used MiniPC/Terminal - it will be more powerful

Wallabag! I am using it for more than a year and it is great