Use advertising portals
One of the easiest ways to sell online for free is through classifieds portals like OLX or Allegro. You can create a free account and post ads for your products or services. However, remember to use the appropriate category and carefully describe your item to attract potential customers.
Use social media
Social media like Facebook and Instagram are excellent tools for promotion and sales. You can create a company profile or website to showcase your products or services. Regularly post engaging content, photos, or promotions to engage your community and increase your chances of making sales.
Create your own website
If you have a little more time and inclination, you might want to consider creating your own website. With website building platforms like WordPress and Wix, you can easily build a professional-looking website to showcase your products or services. Remember to optimize your SEO to ensure your website is easily found by potential customers.

Promotion and brand building
Regardless of your chosen platform or sales method, promotion and brand building play a key role. Regularly engage your customers, respond to questions and comments, and share engaging content. The stronger your brand, the easier it will be to attract customers and increase sales.