Site with 4 users average

Hi Experts,
I’m unable to catch any fault on site. Need suggestions please.

Site is taking 4 5 user avg traffic.
No alarms. No uptilts. No configuration issues. No cabling issues.
FE is standing below site not even 1 sample recorded.
Far away from site he got 4 5 samples and that too vanished.
Changed tilts and checked still same issue.
Recomisssioning done.
BTS O/P is normal.
MHA RET properly configure no R module issues.

Please suggest what else needs to be checked.

What is the RSSI? Please check if there is any interference or not.
Also you can perform the Drive Test.