I don't really know much but SSH is essentially just dialing in remotely. I use putty for Windows to dial in. You need the server IP and your credentials.

I don't know about multiple games at once, I never tried to set that up.

I actually just set this up for myself about 2 months ago. This year I built myself a new gaming PC, and the entirety of my old PC was just lying around. I had a mobo and processor, 16 GB RAM, a 500 GB SSD and the case and PSU. I wanted a dedicated Minecraft server that I could run a modpack on so my brother and I wouldn't have to pay (most server hosting doesn't even go up to 16 GB RAM). I wiped the SSD and installed Ubuntu server (didn't want to pay for Windows license) on it which I had to completely learn how to use, and ultimately I was successful. During the build, I just used the integrated graphics (Intel processor) but now I don't even have an HDMI cord plugged in...I just SSH into the server from my gaming PC or phone to reboot or whatever. Since I already had the components, it was completely free besides the time it took to learn how, and so far I've loaded like 4 different modpacks on it trying to find a good one and each one gets easier to configure than the last. I've only saved money since I put it together.

tl;dr I HIGHLY recommend setting up a personal server. It has a learning curve but it is beyond worth it. I don't think you even need 1TB and if you use Ubuntu server you only need integrated graphics because it's command line only. I do recommend a beefy amount of RAM for sure.

What if it's the climate cycle AND humans are causing climate change so now it's going to be twice as bad?

Also, even if it were just a natural climate cycle, the Earth warming up by 2+ degrees is going to be a disaster. We're not even there yet and shit is getting bad. Many places on the planet will become uninhabitable to humans and those people who lived there will become climate refugees. If the Earth warms over 2 degrees, this WILL happen (is already happening) no matter whose fault it actually is.

I personally am of the mind that the "Earth" itself will be fine. The planet does go through some savage shit and is still there the next day. Arguments like the one you're making don't account that HUMANS are going to have a terrible time and might not make it. Stop saying the planet will be fine because WE HUMANS will not.

Stop spreading misinformation.