What is going on in Chess?

The scope of discussion and questions here lie in (i) Possible variations in FIDE Classical Ratings across the geographical areas, (ii)(Ir)Relevance of online Chess ratings, and (iii) Higher difference of Chess-thinking in the games of young unrated players than rated adult ones.

At some places, I have to mention chess.com and another site. I trust the authorities wont delete it for the sake of the interest of the game and sportsmanship.

My concern starts with an event of September 2018. Returning unrated from the tourney was perhaps the most serious starting point of study and explicit preparation. I changed my openings, planning in middle-game and endgame, along with serious off-board preparations, like developing mental edge, nullifying opponent, performance anxiety, food intake, etc. My mind was completely INTO chess, and I was ready to receive the rating in September 2019. My rating elsewhere was 1583-1606, and chess.com rating was 1339-1308 then. My practice included no take-backs and touch-and-move, with the board always on the table. I assure I was never under pressure, and always played the best move, and expecting above 1000 to 1100 FIDE.

A 1700+ opponent over there (from Germany) thought my strength 1450+, and a friend of Israel being 1500+ was amazed to see some of my games.

However, all this was leave me unrated again, and I was devastated and I left the game for 3-4 months.

Could this be because, Chess training may be more explicit in one state/country than in other? In closed circles, I overheard that it's common to go to sub-prime areas and participate to get rating.

The irrelevance of online chess ratings can also be supported. Some often prefer to participate in a rated event only after reaching 2000 on chess.com, where the others advocate rating expectation 400 points below chess.com.

Furthermore, younger unrated players (under 14-16) played far faster and better than rated adult opponents. I was amazed that those young ones, seldom took a few minutes to think, roaming around hall with almost full-time on the clock. While I was able to predict adult rated opponents, the unrated young-ones played far unpredictable. I found this highly paradoxical and my 1448 FIDE friend said that they don't prefer to get rating as their future chances may get restricted (I don't know how). They directly eye on 2000+ FIDE so they only meet the best opponent, when they have the rating. Only this argument was sounded valid when I could predict the rated ones, and not predict the unrated ones.

What is going on in Chess? Isn't seriously the right time to bring 960 to usual Chess?