PS5 turning off randomly

TL;DR My PS5 keeps occasionally turning off in the middle of playing games, I think it’s overheating but i’’ just a girl who wants a second opinion before finding a shop lol.

Hi guys! I’ve had my PS5 since 2021 so its been awhile, and I got it pre owned by a guy who I’m pretty sure bought it not far from around the release so its pretty old as far as PS5’s get 🤣 Up until now its been perfect, no issues whatsoever, I try to occasionally take the plates off and clean around the fan and all that, but with 8 cats some buildup is expected I guess 😅 about a week ago I was playing a game (dead by daylight, I don’t think thats too bad on a system? Lol) and it just turned off, screen went black and I had to unplug the power cord to get it to turn back on, gave me the typical warnings, was unplugged without turning off, SSD and external hard drive need repairing, it did it again after so I took it apart enough to get to the fan and clean the fan as best I could, but its still doing it occasionally, just when I think i’m good it happens again lol.

Now the most obvious thing coming to my mind is doing what I could wasn’t enough and theres dirt on the heatsink and stuff and needs a real good clean, but before I take it to a shop or something, i’d like others to tell me thats most likely what it is, or if it isn’t what it could be lol! Thank youu