

I’d figure out why RDP stopped working. Sounds like something changed.
Anything else could be stymied by the same things that blocked RDP - firewall change, etc.
I’ve used other tools since before RDP even existed as Citrix Remote Desktop in the 90’s… Frankly for LAN only there’s little reason to consider anything else with Windows boxes unless you want remote management features like services, shares, etc. Even then I often just use RDP because it just works.
Edit: ah, I had it backwards, your server is Linux and your laptop is Windows.
I’d use VNC, or just ssh for most stuff.
Second this.
And I’ll add DietPi is great, easy to run wherever you want. I run it in its own VM on my ESXi box.