How to distinguish user errors from the platform?

I often see that negative reviews are explained by "user errors," but it is not always clear where the error really is, and where the attempt to justify incorrect actions of the platform is. How do you separate these situations for yourself and who do you trust more in the end?

Sometimes negative reviews are justified by "user errors," and it's difficult to figure it out. I focus on the repeatability of problems and the support response. The https://spingrannyuk.net website, which is an online casino, demonstrates an honest approach: any misunderstandings are dealt with without accusations, mistakes are clarified, and in practice it is difficult to accuse the platform of dishonesty. Such an experience builds trust and a sense of justice.