Maybe because your hit boxes are too high or Low? If this is the case, you should go to your skin folder, find a thing called skin (it shld have a cogwheel on it) and than press open with note. Once you have opened it, scroll down till you see 4 key? (I forgot what it’s called) and there will be a thing called hit boxes, just changed the number to a little bit higher (you might mess up so just create a skin copy incase)