Is there something wrong with posting comments and writings?

Is there something wrong with posting comments and writings?

I have failed to add comments so many times

https://www.englishforums.com/English/ConvenienceStoreLike/bqcnhz/post.htm

Actually, I already got an answer from some teacher here, but she or he did not talk about the last example.

I have learned that that you like modifies convenience store, or simply store in convenience store that you like.

And then, how about this one, English teacher that you like?

Can I say that that you like modifies English teacher, or simply teacher, too?

Thank you so much and I am sorry for my poor understanding??

According to the answer, I thought that way. What do you think? Thank you so much as usual.