Facebook Posting Problems

I am a new user to WordPress and I am frustrated with my Facebook links so far. When I post a link to a blog post, the Facebook post has no picture and includes a list of post tags instead of the opening lines of the post. I have looked through the Forum and installed Jetpack and still can’t seem to change anything. The only thing I knew to do was check with you guys directly. ??

Thanks so much for anything you can tell me! I’ll warn you now that, again, I’m new to blogging so definitely new to the technical side of things. But I’ll try to follow your ideas.

-Lauren
https://www.thesetravelingdays.com/