Dyslexia means you cannot learn to read and write BY THE STANDARD MEANS. There are various tools (cards with holes cut out in them)... and so... that can help you. One usually needs a tutor educated in these disorders.

My written English is actually much better then when I write in my native language without proofreading and autocorrect. Lotta reading helped.

Also, inability to learn grammar is not dyslexia, it's dysorthographia.

And these have nothing to do with IQ.... or being or not being depressed.