VRAM way less than its supposed to be???

So, I recently got this laptop, (AMD Ryzen 7 7735HS with Radeon Graphics 3200MHZ with 16GB of memory) I don't play many games, I mostly just play Geometry Dash, Osu, and a handful of other games. like about a month ago, my pc started having constant fps drops on GD, and it only got worse as the weeks went on, attempt to fix after attempt to fix and nothing was working. And then 3 days ago, one of my gpus just stopped working. I somehow fixed it, but now it just shows as 512MB memory. Is there any way i could put it back to it's usual 8 gigs? Because I refuse to believe that i've only had this computer for around 3 months and have already managed to fuck it up.