Hello again @DuoDuo
Sure I would love to help you.
I can confirm from your public profile that you have added 345 reviews and none of them are public.
Google has automatic filters that hide your reviews so only you can see them. This can happen when some of your reviews violate the guidelines, including:
Prohibited and Restricted Content
Format Specific Criteria (See under Text Reviews and Captions)
Read about typical review guideline violations here.
If a lot or all your reviews are made private you could try the appeals form found here.
If you are on a Desktop use this link to Count your hidden contributions. From a mobile device use this link. These links will explain how you can find out if and how many of your reviews are hidden.
If you need to identify which of your reviews are hidden please see this useful tip by my friend @C_T.
Currently, your issue might not be your fault. Read: Known issue: Unpublished reviews and photos on Google Maps. And, please make a reply there and request your account also be investigated.
Hidden reviews are not your only problem. Unfortunately.
Learn about hidden photos and how to find out how many of your photos are hidden by reading my post called How great a local guide are you?
Typical photo violations are explained here:
https://www.localguidesconnect.com/t5/General-Discussion/Common-Photo-Violations/td-p/2901636
But please don’t panic. It could be that the system fails and have hidden all your contributions by mistake. But it will never hurt learning the rules and evaluate your reviews and photos against the guidelines.
As I can not see your reviews and photos it is difficult to help you further.
One last thing: Please make sure your profile is not restricted in the Maps settings. This can make your photos and reviews look hidden even though they are not.
Sorry for the length of this reply.
Morten