I used the command /function ps-mob:convert/legendary

Now i dont know how to remove it from me

I did:
/effect clear @A
/kill @A

pls help me remove the effects i have a bunch of heart and speed idk how to remove it

At the bottom of this issue I explained the commands to remove all the effects
You can also just remove the tags and go through an end portal to the overworld (this is abusing a bug that removes all attribute modifiers in vanilla minecraft)

Thank you ur datapack is cool btw <3