

This, this, and this.
As computer cases have gotten smaller the heat buildup has gotten bad. My mother in law had one of the SFF pc’s from 10 years ago and after about a year the HDD died. Replaced it with a used one I had that was 7200rpm vs 5400rpm and it was dead in 6 months. That drives twin still works today but was always in a tower case.
Heat kills CPU’s, RAM, MoBo’s, and everything else in the computer.
Upgrades are limited to RAM and SSD but those upgrades generally mean even more heat so then you end up thermal throttling. You could get an external GPU but now you have a huge brick sitting next to your little box pc. IMHO they agree great fir something like retro gaming/emulation but you will generally be better suited by a full size computer especially if you buy a board that has a long lived socket.
Warranties are great but the issue is that the warranty fairy will try to get out of it as often as possible. Generally this is done by pushing the blame onto someone else, usually the purchaser.
I personally buy a cheap case without a psu, then get a good power supply. A mid range MoBo like an AM5 B850 with a cheap compatible processor. Add some RAM and a SSD with a budget GPU then you end up with something to get started and closer to the end of the socket lifespan you can grab a better cpu and GPU then buy a cheap case and MoBo and have something you can sell, give to someone else, or use a a server. You will start with a better computer and end with a MUCH better system.
I started with an x470 with a Ryzen 1600 and 16GB of RAM and a used 1080ti. I doubled my ram (not as easily done on with ddr5 sadly) upgraded to a 5800x and am waiting for a GPU that isn’t outrageous in cost but will double my fps. My old cpu was dropped in a B450 with a used RX480 16GB of ram and a 1TB SSD for my stepson to use as a gaming machine similar to a steamdeck (ChimeraOS) and he upgraded the GPU to an RX7600.
You truly have to find what helps you. For some people it’s minimal activity and relaxation, for others it’s something frantic and crazy(but not their job), some people turn to sex and relationships, others turn towards absolute control, while someone else may prefer to fully relinquish control of everything and just plain let another person be in control of every aspect of their life.
Being burned out takes a while to figure out sometimes. I personally want to be 70 feet under water on a reef every chance I get so I don’t have to think about or really deal with people. Nature often helps people who are in jobs where they are stuck indoors and time with very few people and minimal communication if they normally deal with a constant stream of people. Basically the polar opposite of their job.
Going for a walk in a park our on a beach is a good place to start it you can. Find something that allows your mind to just exist and be a part of your surroundings. In a pinch you may find that searching for an asmr nature video may help if you can’t figure out what you want to do or don’t have easy access. Sometimes it’s about finding your element. If the idea of being in water sets you on edge and stresses you out it’s probably not going to help, at the same time if you don’t like heat going for a jog in a desert won’t be your cup of tea either.