I’ve never seen an error that just says “bad platform”.
Fixing computer problems is essentially just being good at searching for stuff related to your problem. For example in your problem it would just be googling “Linux bad platform ≤name of game>” and guaranteed someone else has had the same problem and either them or someone else has figured out a fix for it. You then apply that fix, if that doesn’t work, try the next result. If it gives you a new problem, rinse and repeat.
Look up the XKCD comic about fixing a computer, that’s literally how we do it. My dad asked me a similar question to yours, I literally printed out the comic and taped it next to the computer and said “this is what I do”.
About 2 years ago (I’ve been working from home for the past 3 years, a week here or there was spent at my parents), years after I had printed out that comic, he said “I just realized that your job is essentially knowing how to look for the information you need and how to apply it when you find it”. He’s an electrician, so not really the same set of skills haha.