If you have created the table product with associated id column, then the sequence isn't merely known as product, however rather product_id_seq (that is, ${table}_${column}_seq).
This is the ALTER SEQUENCE command that you need:
ALTER SEQUENCE product_id_seq RESTART WITH 1453
In PSQL, you can see the sequences in the database by using the \ds command.
Note: If you are doing \d product and observe the default constraint for your column, the nextval(...) decision call can specify the sequence name too.
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