How much do you interact with the accounts of people who buy the products you sell? Meta rewards engagement with engagement. If you only post unengaging content and don’t engage as a member of the community (through likes, shares and high effort comments) the the algorithm won’t put your content in front of people.

If you have a shop selling bike parts, you have a great source of content through restorations/upgrades, showing off customer’s builds as well as performance tips and tricks etc.