Welcome to the forums!
Looks like you need to know more about beats and timing.
It's extremely messy and it sounds like your just adding in more to fill in the spaces.
Not sure what this is for, but If I were you, I'd start by just knowing the keys and what they sound like.
It's always good to have prior experience in music rather than just whipping it up.
Not every song, only has drum beats, I suggest adding melodies with pianos or any other instruments you find appealing.
Good luck