Searching for the perfect soundbar/sub for home

recycToodle

Hello everyone, hope I am asking in the right place. I am new to all of this so a little patience might be needed, haha. Basically, wanting to improve the sound at home with a soundbar, which I thought is more ideal given the size. The Signa S2 caught my eye. Would I need to add a sub for this or will the soundbar suffice? Also, are there other things to consider before installing one in our home besides the size of the room and connections?