I’m so much into writing journals these days, and after thorough research, I’ve found a perfect site for me!

Saying "I'm so much into..." is nit technically incorrect, but native English speakers would usually just shorten it down to "I'm so into...". They would remove the "much".
A comma would be placed before "and" because this conjunction is combining two independent clauses.
The word research would be a better fit here instead of search. Thorough is an adjective so it must be paired with a noun (research), or if search is kept, it must be changed to searching, and thorough must be changed to thoroughly (an adverb).

Very good use of contractions!

Actually, I have one Canadian friend who will be willing to check what I write, but I didn’t want to bother her every day since I’m determined to write journals almost every day.

Both uses of "every day" should have a space between every and day.

God bless to all who give valuable time for me!

This is another instance where this is technically correct. However, native speakers would not speak in such a clunky sort of way. They would instead say something like: "God bless all who have helped me" or "God bless all who have given their valuable time to me."