rsyslog - timestamp setting - log file(imfile)

I applied the following setting on the .conf for rsyslog, it can read logs from the file.

module(load="imfile" PollingInterval="10")

input(
    type="imfile" File="/root/loggingFile.log"
    Tag="tag2"
    Severity="notice"
    Facility="local0"
)

The logs in the file also come as follows-directly the same, nothing different (like time);

trying1
trying2
trying3
...
tryingNew

It can read the logs, but every time a new line is written, it reads the whole file from the beginning. When I make freshStartTail = on, even though the new line appears, it does not read at all this time.

How can I solve this problem?