First, note all the datafiles associated with your tablespace:

SELECT DECODE(r, 1, tablespace_name, NULL) tablespace_name, file_name
FROM (SELECT tablespace_name, file_name, rank() OVER (partition BY tablespace_name
        ORDER BY tablespace_name, file_name) r
        FROM dba_data_files
        ORDER BY tablespace_name, file_name
)

Result:

The ST_SERVERLOG tablespace has 2 data files:

• /opt/oracle/oradata/ORACLE19C/datafile/o1_mf_st_serve_js7jhf9y_.dbf
• /opt/oracle/oradata/ORACLE19C/datafile/o1_mf_st_serve_js7jqjb3_.dbf

DROP TABLESPACE ST_SERVERLOG including contents;

Manually go on the disk and remove the associated data files. If those files are not in use by any tablespace, the Oracle will let you remove them.