Single, two bedroom, at 18???? Sweet! Firstly, sweet! Hopefully that PS5 will get less and less use as your badass setup occupies your social time more and more.
I digress.
If you're not concerned with waiting a little extra time to download a new game, 50Mbps and 500Mbps are the same experience for you. Give a list of all your local ISPs and their offers. Then do NOT get upsold to a speed you don't need
Prioritize a fiber optic provider if you have a choice. I recently switched from cable and my ping/lag/latency on fiber is reliably 3ms. On Coax/modem it was more like 15ms. Still, first world lag, but it is noticable (and I don't game anymore, just surfing use more responsive)