>>/91642/
> I just want to know what they think and feel
How about asking?
< What do you think about X?
You could try introduce the topic.
< I heard that x and y. Do you think it's right?
Try not to look scammy. Appear honest, straightforward, and simple (not simple like a dolt).
Also look like you are really interested in their opinion. Like someone who wants to learn.
You could try talking about topics yourself know well, but take care don't generate arguments, or heated arguments at least.
Many people like it if they are heard, if they can share their opinion.
Ofc there is suitable time and place and people and topics. You shouldn't pry about stuff like one could consider as trade secrets. Don't ask bank security staff about their shifts...