Is there a way to auto-archive completed Notion database tasks after 30 days without paid add-ons?

I have a daily task tracker database in Notion that has grown to over 5,000 rows. It's starting to slow down the app loading time on mobile. I want completed tasks to automatically move to an archive page or hidden view once they are older than a month.

I know third-party automation platforms can do this, but I'm looking for a native Notion formula, filter trick, or a simple free automation setup to handle this cleanup in the background.

Thanks in advance for your tips, best regards.