Complex taxes done in TT, any services to review return?

I've completed but not yet filed my 2021 return. Are there services that manually review a return and work with me to identify errors or opportunities?

 

I have a substantial amount of taxes due to Fed and California. Taxes were complex this year due to RSU vesting/sales, ESPP, sale of home (above $500K exclusion) purchase of new home, and 2 loans with mortgage interest.

 

I've reached out to a few CPAs but they haven't gotten back.