Hello @Sara2 welcome the Local Guide Connect community!
All reviews, photos and videos posted to Google Maps are checked by an AI filter, not only for obeying the rules, but for preventing SPAM and false information. If rejected, Google never tells us, why this happens.
If photos or videos are attached to a review ad only one of them is rejected, the entire review including all other media will be hidden to the public.
If you ask your help here, you should provide links to your profile and the place your did post your review. A screenshot of the hidden review might help too.
You can find more tips here: How to Get In and Out of Trouble: The Main post