Benefits of Engagement groups

Ever since not having a bot anymore due to the fall of instagress and no other reliable ones, I've identified engagement groups as the next step to growth. I have a few questions…

Is your chance of hitting the explore page increased based on # of comments or quickness of likes from when you make the post?

What determines being the featured comment on someone's post (besides the fact that the page follows you)?

I don't even know if these questions can be answered but any help is appreciated.