Here is a simple tip to get more likes/reactions for your Facebook page posts, you just need to make sure you post something when your page "likes" are actually online, so that you can make the most out of it.
Open your Facebook page, go to "Insights" > "Posts"
Here, you'll find a graph where you can find when your fans are online, in this graph you can see 1PM and 10PM are active, you can post during that time. I'm sure it'll be effective, but you can also experiment according to your niche. If you are running a Food ad, then you should make sure you post it in proper time zone.
Next time when you post on your Facebook page, make sure you do that when your fans are active.