Second part of the question.
If the answer to my first question is “YES, IT IS POSSIBLE TO CREATE A COMMUNITY WITH BUDDYPRESS2… My second question will be: is there a payd/premium version that includes professional SUPPORT? Or I have to do all by myself?
There is no premium version of BuddyPress.
You can hire a developer or do it yourself.
You may be interested in BuddyBoss Platform – a fork created by a commercial company.