Use Macbook Pro as a desktop PC or Mac Studio?

Hi everyone, about 3 years ago, I had a 15" MacBook Pro with TouchBar (from 2016, taken used), I practically kept it like a desktop PC, every now and then I carried it around. After about a year of life, it started to give problems with the battery, I took it to be repaired (in a non-Apple center) but they broke it even more, a message came out in the mac (Critical Software Update), and since then it hasn't been there anymore nothing to do, my macbook broke like this.

Honestly, I would be a little afraid to get a new MacBook Pro, given what happened to my old MacBook, let's say that sometimes I need mobility, but not always, and I would also be afraid of the battery, since MacBooks are more fragile .

So I thought of a Mac Studio with M2 Max, 32GB of Ram and 1TB SSD.

I've heard that the new Macbook Pro 14' and 16' have a system that automatically switches to power at a certain percentage of battery charge, without charging the battery, but I still don't understand how this mechanism works, so you could also use like desktop pc?

Always with the M2 Max configuration, 32GB of Ram and 1TB SSD.

Also I have the files I work on all on the NAS not the hard drive so I'm connecting to my server so I was thinking of working remotely over the internet on the Mac Studio using remote connect software with a windows laptop if I'm away from home.

Do you think this option is feasible? Or connect with the macbook pro to the nas always managing files via the internet, if I'm away from home? or copy the files and work on an external SSD and then make backups on the Nas?

(but I don't know how convenient this last option is given the amount of data)

Give me your advice please

Thank you so much and sorry for the long post!