@lololulu19
If you have 3 screens I presume you are using this equipment at home - and not travelling with 3 screens. If so, why don't you just get a couple of mini pcs, or intel sticks to stick behind your screens (or TVs). They are cheap and will easily cope with 4K video, Plex/Jellyfin/Netflix, qbittorrent and watching chaturbate. With a Lan drive storage is not an issue - nor is sharing your files. You can control them all from your laptop.
I have used these for 5 years and never had one fail. Even if they did it wouldn't be a real issue as nothing important is ever stored on them. Logins and passwords can all be synchronised using almost any modern web browser.
Smart TV's have now caught up though and you could actually watch most any website like chaturbate on a Smart TV.
The real reason you laptop gets hot is video encoding - and as noted by others - not something to which a laptop is well suited. Video encoding is very CPU/GPU intensive and so generates a lot of heat. In a laptop that heat is being generated in a tiny space that is difficult to cool. A tower PC would cope with this much better and cost a fraction of a $6,000 laptop.
Of course, you also have the option of using a cloud hosted PC which would solve any location issues. Again they are not necessarily cheaper than using a comparable desktop/tower pc but can be a lot more convenient if you are wanting to look after just one pc - your laptop.