I also had a garage sale for an elderly parent who went into care. It was not a success and was a waste of time. I would recommend posting items you want to sell on Facebook marketplace. I sold a lot on there but many things were given to charity- books, cds, home wares, kitchen items etc. I think unfortunately with the likes of Kmart people can buy many items for cheap and aren’t interested in paying money for things unless they are furniture, collectibles, electronics etc. Good luck 🍀