Extremely random crashes on gaming laptop (Event ID 41 and 161)

Hi! I stumbled upon this website while trying to find solutions to these problems I've been having on my laptop for a really really long time now. It probably started like 6 months ago. My laptop would suddenly crash when playing very random games (Like ONLY in specific games, and they weren't even demanding games). I naturally just stopped playing those games for a while, until the same crashes started happening even when I'm not on a game. And then I realised that there was this very weird sequence that was going on. If let's say my laptop was shut down for a minute, it would crash seconds upon startup. If it was shutdown for hours, it would crash minutes upon startup. And if it was shutdown for 3 days or more.... It would PERFECTLY run. Until the next time I manually decide to shut it down of course. I even shut it down for 3 days, and it was working perfectly fine for WEEKS. But then I had to travel out of town for a month, and when I came back even though it had been shut down for the entire month, the problem seemed to be worse. It just instantly kept crashing no matter how long it was turned off for.

So finally I took it to a repair shop. The guy said it's a damaged GPU, which is the worse I could have asked for. He wanted A LOTTTT of money to fix it, but I decided to get a second opinion. I went to a guy who had a really good reputation, and said the error wasnt in the GPU, but in the motherboard. He fixed it for a fairly cheap price, and it actually worked. For 6 hours, Before crashing while in-game. It seems to be perfectly fine if I'm not running any game though. So I checked the event viewer, and of course there was the oh so popular Event ID 41, Kernel Power. But at the same time, there's an Error of Event ID 161, which says "Dump file creation failed due to error during dump creation." and that the EventData is \Device\HarddiskVolume3 (Though Idk which harddisk that is, I have a C Drive of 128 GB SSD and a D Drive of 1TB HDD. I'll put attatchments of those errors and the V2 Log Collector I found suggested on here. When running the V2 Log Collector thing by the way, there seemed to be a large block of text written in red, though I have no idea what any of it means. Will make sure to include that, too. And here are the things I already tried :

Turning off automatic restart at failure.
Disabling quick startup.
using cmd prompt 'sfc /scannow' which said there were no errors found.
Updating graphics card obviously.

I think that's all I did? I've been having this problem for WAAAY too long. I'm getting extremely desperate, especially since it's such a powerful laptop (at least to my standards) that was supposed to have a much longer lifespan than just 2 years... I would be forever grateful to ANY suggestions. Please, if there's any way I could give any more useful information that could help, do let me know. And sorry if I did any of the attachment things wrong, it's my first time seeking out help this way, since I really have no idea what's going on...

Thank you all in advance.