Assuming you mean the account your posting from the 1300 was with a record of 1-0 after your first game and many new players start at 1200 lots of them are not really 1200. I looked at a few of your games you are not 1300 yet but had some good games you could be if you kept playing. When your getting mated on move 7 by fools mate with bishop+ queen on f square its obvious you need to learn a few things from playing more games to get there. You opponents are not cheating when you lost with them playing at 50% accuracy just need to play more games. The bots are a bad way to look at elo and might be giving you the wrong idea they don't pay like humans at all ironically nelson play more like a human that most bots. Just keep playing don't get discouraged 800-900 for a newer players is actually fantastic and based on some fo the longer good games you played you could easily get 1300 if you just keep playing.
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I was at 1300 for 10 minute rapid (my record) - now I'm down to 800 something. Did everyone at the ~1000 level eat a bunch of vitamin gummies or something? How do I get better without the wisdom of Stockfish and being frowned upon by the Fair Play system?
Like I swear people went from Martin to Nelson for no reason...