I would consider using your Synology for what it's good at - storage.
My homelab has a Synology DS1618 and servers are Lenovo M90q systems. They have enough compute to get the job done, and use the Synology NFS mount for storage.
How to install .deb on Pop_OS
How to install .deb on Pop_OS
"Latinx" or "Latine"?
Does it have Discovery as a normal app store? You might be able to use that.
Honestly, give the terminal a shot - it's not as complicated as you may think.