i also was very curious about electricy and electronic..............
bu doğru görünüyor mu?

Corrections are marked with * or between parenthesis.
"I" (first person) shall always be uppercase.

I decided to study vocational training studies because since *I* was a kid, (comma) *I* have been always asking *to* ("to" is unnecessary) myself how the *mechanics* *work* (changed to mechanics but I'm not sure if it's correct for what you want), *I* also was very curious about *electricity* and electronic components, but *I* was not *a* (added a) good student enough *how* (remove "how") to go to the university, so vocational training studies *is* (remove "is") was the best *studying* option for me.

Car mechanics encompasses everything *I* like, mechanisms, *electricity* and electronic components, *I* *am* (Verb "to be" is unnecessary) also like cars and motorbikes so *that's* (shortened form of "what is" which more correct to say) why *I* am *studying* car mechanics.

I Hope I have helped you.