Be careful of what "experts" advise you follow, especially if they are not there to support you when you try it.
Sometimes, if not quite often, somebody discovers something that happens once or twice and for whatever reasons they are not aware of all the variables that permitted the discovery in the first place, but they announce it to everyone else to follow, without fully vetting it first, or discovering the variables that permit it, the ones that do not, they set it out on the internet...
Being an "expert" means cutting one's chops, discovering the success and failures, and as a result possessing an innate knowledge to fall inwards on in the course of further discovery, so that the advise finely given and followed is both insightful and solid.
There are tons of "experts" on YouTube and it is impossible to know which are real and which are the armchair quarterbacks... But, in the discovery of one that has failed you, go back and try and determine where their advise failed you. Part of that discovery will begin building your own knowledge base!