Can anyone let me know, what is the best free/paid chat messenger where i can interact with 2 or more people at once ?

I would suggest you to choose Skype because it’s the best and also the easiest to chat.
I agree with you with Skype. I use it to chat with my friends around my place and also abroad.
I’d rather go with Skype.
Yes, I also choose Skype. It is free also you can choose audio or video calls.