For those of you who are confused about spelling!! I don't know much about spelling either, but I'll teach you the most basic ones.
First of all, it is possible.
In most cases, it is ‘do’ not ‘do’.
~You can't do it
~You can do it.
But it's not like that
It is possible.
~Can I do it? No
Can I do ~?
Next up are the most surprisingly common mistakes: ‘어떡해’ and ‘뭐게’!
~How can I help you? No
~How can I help you?
How is it not?
What should I do?
I hope this helps 😀