Best forex trading strategy?

So for a while now I have been posting in this group and also reading many other subreddits to find the fundamentals of forex and the one single strategy that works the best. Lots of people recommend many different strategies and the terminology / strategies I hear the most are

• Liquidity trading
• Supply and demand
• Swing trading
• price action
• and then finally Wyckoff

So I individually researched all of these and squeezed as much info off the web as possible and for me supply and demand with price action works the best and to be honest it is the easiest of them all. I haven’t actually back tested any other strategies yet. It took me so long just to find the basics of forex and just cannot understand how there isn’t one single forex strategy that works for every single person when understood fully. I am finding it hard to word exactly what I mean but how come people who are getting introduced to forex can’t just find the fundamentals of forex and stick to it? why do people have to make shit up like why do so many people recommend certain strategies like supply and demand but then others turn round and say its a lot of crap it doesn’t work when it clearly does?

help please