If you have RFTMed and still break it all then PEBKAC.
More serioulsy: all this modern kit works wonderfully well if you use it in the way the designer intended. So if you understand what it can do and respect this it is very unlikely to go wrong. However if you want to do something a bit different then you don’t just need to understand what it does but also a bit about how it does it. That way you know what boundaries to respect and which to push.
A very basic example is the error saying your phone is out of memory. This is because you tried to save to many things to your phone. This is a boundary you cannot cross!