Hello! Coming in from Unity and I was just starting to make a quick and small competitive game [to be published on the Google Play Store] for learning purposes, and a personal achievement this year in Unity however, given the "announcement" I started learning Godot this week. I am liking Godot so far [far better than Unity] especially as to how fast it loads.

I am planning to transfer my game to Godot. In Unity, I have used their Unity Game Services which has Auth, Matchmaking, and Server Hosting. I just wanted to know if there is a similar service which supports Godot. I was also researching on UGS if it's engine-agnostic however, I really don't know how I could integrate auth, matchmaking, server hosting using their API. Do you have any suggestions as to how I could implement this?

nakama is probably the easiest solution to your problem.
Steamworks is also an alternative if you plan publishing your game on steam exclusively.

I've heard about Nakama and read about it. From what I've understand, it is great when you want to host it on your own device (I don't know if this is correct). I need to have it hosted somewhere and handle all server instances, fleets, etc. If I use Heroic Labs other services for hosting, isnt it like $600/month?