Before recovering tablespace, first
validate database backup availability
RMAN> RESTORE DATABASE PREVIEW SUMMARY
UNTIL TIME "to_date('05/22/21 18:34:00','mm/dd/yy hh24:mi:ss')";
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If it says that you have all the backup
available then you can proceed with the tablespace recovery
RMAN> recover tablespace
"TEST1" until time "to_date('05/22/21 18:34:00','mm/dd/yy
hh24:mi:ss')" auxiliary destination '+DATA_INF';
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Put the tablespace online after complete
recovery and validate its availability and the tables in it