Hmm, well to improve your memory there are ways such as. If you want to remember thing's easier you can make a memory palace that legit works, but have to put effort in making one. Search up a memory palace < --- if interested.
Ways to improve your memory though :
Play brain exercising games
Quiz your self with random letters / number, try to remember them, and each time you get them right obviously add more numbers / letters and try to remember them again
Get 8 hours of sleep [ really important over-all ]
But yeah mainly, there are many ways to improve your memory I'm not sure all of the way's but those are some pretty-helpful ones. I highly recommend playing games like puzzle games, and words searches. At least, that what made my memory better, I can legit repeat everything what the teacher had said 30min ago. =)
#sudoku4lyfeeeeeee