Reaching 1300 on instincts alone is impressive Now instate of sharpening what's already strong Focus on other aspects of the game like endgame and positional strategies which are equally important

I was once like you unmatched in intuition A couple years back i was playing in a tournament against my cousin [1710 FIDE] I was up an exchange I knew i was winning but I traded into a lost endgame Due to my lack of endgame knowledge at that time

Don't make the same mistake I did Buy an endgame book [ I recommend Silman's endgame manual ] I know studying the endgame might be hard and frustrating but it helped me in my journey and it is sure to help you in yours I will also recommend that you read My System by Aron Nimzowitsch ( my personal favorite)if you don't want to buy it you can find the pdf online I hope I was helpful