To find the right Facebook Groups for your business, follow the next steps:
Start by using the platform's search feature. It lets you find groups relevant to your business type, niche, and needs.
Assess the group's page to see if it fits your brand. Check the page description, group rules, and engagement levels.
Join the group. If it's public, you can begin to participate in the discussions. However, you must meet the criteria and wait for approval to be a part of a private group.
Once you're a part of the group, feel free to engage but follow the rules. Start posting pieces of content on the platform.