Hi Exo92
Welcome to the forum
I challenged myself to run a miner on an old laptop in my room
Since you mention about an old laptop, you do realize that it's not profitable, right ?
Think twice before you proceed with the mining.
IMHO, if you're going for the cash, trading is a better way.
I saw that Chrome installed with it several tcz, so I hard deleted one to see the result, the miner does not launch anymore! If chrome can't run anymore, the miner can't either ( xmrig)
There are many possible causes that could break a program.
Sometimes it's dependency, sometimes it's the outdated caching or config.
Occasionally, it could be as simple as setting an environment variable.
You should lookup the dependencies required by the program first.
A quick starter would be verifying the shared objects that it links to.
ldd /path/to/xmrig