Are you using the PostgreSQL writer or the PostGIS writer?

If you want to write any geometries, you need to use the PostGIS writer.

I used PostgreSQL writer. I also tried PostGIS writer but didn`t got any result. Should I install some extension to PostgreSQL?

Best regards and thank you

The Postgresql writer will not write any geometries. You need to first install the PostGIS extensions into your Postgresql instance.

You then have to execute the following command in each of your spatially enabled databases:

CREATE EXTENSION postgis;

More information here: https://postgis.net/install/

You can then use the PostGIS writer in FME to write the geometries.