please have a look at /var/lib/tor/stats/bridge-stats, if your bridge is used.
if not you may change your bridge distribution mechanism: doc/distributors.md · main · The Tor Project / Anti-censorship / rdsys · GitLab
please check https://bridges.torproject.org/status?id=YOURFINGERPRINT beforehand to make sure rdsys picked up your settings correctly
[info] BridgeDB to Rdsys / Onionoo.torproject.org vs. bridges.torproject.org