how to start site flipping without spending money

Hi i have some ecommerce dropshipping sites and wanted to sell them but i dont know how to begin. I tried to use flippa also but they charges amount for listing. I am looking for a platform that could help me sell my websites and get their commission amount based on sale amount. Can anyone help me or guide me as i am very low on budget.

use free listing marketplaces like Flippa, Motion Invest, or Acquire.com
they take commission only after sale
also try niche groups for direct buyers