To increase Facebook page or Facebook group likes or follows. do the Following
Consistency in Design
Keep the format of the background same. It would help you in creating original identity of your page.
Daily Invite Few , Do not jump and try to invite everyone in a single day. Inviting few & few new likes daily will tell facebook that this page is not spam & is improving regualarly Important Point-> Invite your friends when you think they will be using facebook. Data shows that if you are inviting at wrong time then that invitation tends to fail.
Regularity in FB Posts
Only Post 1-2 times per day. Sometimes we post many times in a single day & then forget to post next few days,this is wrong.Please mantain regularity
Facebook Post Engagement
If facebook friends or other visitors comments on your post , reply to them. This will improve weightage of the Post & it starts appearing more times to your friends.
Facebook Posts Creativity
Be creative and touchy with your words. Check the words "Million dollar Pic". I raises question in the mind of people they tend to see it. You need to use your words smartly
Focus on Recent
Always try to focus on Recent News and updates because post containing recent updates keeps your followers engaged.
Facebook Creator Studio
Post Videos & use facebook creator studio if possible. Use Good Thumbnail Use Attractive Heading Provide Value in Video.
If your Page provides some kind of education then make Facebook Units and post content there. As it is new facebook is giving importance to this. This will improve your likes of page.
Facebook Live helps your followers updated live about your Page. Use it Occasionally
Utilize previous Audience in New Facebook Group
Now a days your Facebook Group has the ability to link Multiple Pages to single Group . So you can invite followers of those pages also.
Follow Facebook Suggestions
On start of Facebook Page/ Group , you will get suggestions . You need to complete those steps to make things quick.