Here's my first eight courses for Super Mario Maker 2. They tend to be a bit on the challenging side, but there's nothing Kaizo and/or trollish here. A certain skill level may be required, but no advanced techniques (such as mid-air shenanigans or weird glitch abuse) are necessary to clear these, I promise!
That said, none of these courses are really suitable for multiplayer. So... keep that in mind, I guess?
Well, enjoy!

Oh, and feel free to share your own levels in the comments!