Well... I hate when someone makes M4M, but his map is unrankable and I don't feel there is any sense to mod it... I'll give you just some advices:
- NEVER overlap on easy/normal difficulty!
- Try to avoid stacks on easy/normal difficulty
- Take time to make perfect shapes
- Make blanket where it's possible on easy/normal difficulty
- Don't hitsound randomly, listen music or at least make system of hitsounding them like whistle on every second 1/1 note or something
- Never change snap without reason
- Never make jump or anti-jump when it's totally unnecessary
- Don't make everything linear try some natural shape
- Overally beatmaps looks somehow unnatural, everything is just random, straight, insensible
- Look on others' ranked maps with some simple style. I can recommend you to look on some kioukiou's maps. His style is quite simple to understand and maybe it will learn you at least a bit.