Hi, @musafirhoon!
Welcome to Local Guides Connect!
This is a problem that had happened to many Local Guides. Nowadays, Google has applied a spam filter to remove many fake contributions, and unfortunately it also takes down the good and detailed reviews. You can try to edit your review to find the reason it is got hidden. It could be happened from the word chosen in the review, but it could also be happened from the photos and videos sent in that review. For the photos and videos, you can delete it all and add one by one.
This is the detail that can help you to evaluate your hidden reviews: How to get help evaluating hidden reviews - Google Maps tips & tricks - Local Guides Connect and Common Review Violations - Google Maps tips & tricks - Local Guides Connect