Comments and encouragements
This passage of self-informing story is generally considered quite good English composition in terms of proper use of grammar. The consistency of tense usage is also obvious. However, there might be also some minor confusion of using tense, for example, in this sentence “Although I sometimes missed the classroom environment because the learner’s time different, and I want to my friend tutors…” Normally, adverb “sometimes” is used in Present Tense. It is not practical to use this word in Past Tense even though it is possible. Moreover, in the same sentence there are two tenses being used: one is Past Tense, another is Present Tense. Usually, in one sentence there should be consistency. If a sentence is used with Past Tense, it should be Past Tense in entire sentence. I wholeheartedly encourage you to improve more by learning from mistakes.
These are just, however, minor errors from the generally good writing I have found in this passage. Personally, I think that these mistakes can be improved further and this is a process of learning.