How do we increase Facebook likes in organic way?

You can increase Facebook like By regular posting in your business page and also share this post in many related groups.

If you discover your organic reach is gradually decreasing or you simply want to improve your results, there are a number of ways you can do that.
1: Publish Evergreen Content
2: Post Quality Content, But Less Often
3: Use Organic Post Targeting to Serve Relevant Content
4: Post at Off-peak Hours
5: Choose Content Types That Resonate With Your Audience

If you have good and relevant content you can get more likes . Even cross linking with other reputed facebook page of other companies will help

share the good content in friend circle

Yes I am totally agree

Share Post & Page in Groups and Invite Friends on Page

post daily base image and text in your official facebook account at least 2time in a day.

share engaging content

You can post daily basis with good content and images.

share something interesting

Yes I am totally agree with above friends.

very good content and share with friends

increase Facebook friends and share some interesting content, join groups and invite people to like page...

Good Day Traj Infotech,
You can increase your likes by sharing more about what you are doing, and liking other peoples stuff also.

You need to grow your friends Network, Join community groups relevant your business.

The best way is "Give and Take"

invite people to like your page

Share some interesting topic, join groups and share some relevant funny topics and also share new informative posts...

more different content but the same link and sharing on groups

Thanks to all. Your Reviews are very helpful to us.