thanks a lot for the easy recap !!
I remember hearing and checking out Nginx Proxy Manager while following tutorials some mention that, but i found the tutorials kinda awkward at the time and didn't fully understand what it was for ( it was kinda of a long time ago tbh ).
As for the ISP, it is Fastweb, in italy, and is kinda a bummer, they rely on Telecom's FTTC network ( meaning the cable and cabinets infrastructure ) for their service, so i can either choose Fastweb ( kinda good pricing since I only have internet and no home phone ) or Telecom's pricing are like and armed robbery, where the fixed price you sign is already higher, and is full of hidden paid service that pop up every now and again and it gets you mad on how many times you have to call their customer service to either remove those service or claim refund.
Other ISPs in my area don't have fiber connection and top to like 5 Mbs downloads on a good day.