As Happy Jack has said, its a big subject.
My dummer bought an HK line arrary system and we go out as a PA hire (as well as using it for the band). And I have to say its the clearest, fullest sound I've mixed live on. I can't recommend them enough.
Plus there are no huge mid/top boxes blocking the view of the band. All very discrete and very portable.
Something similar to this, but we have 4 actives and 4 passive subs with 8 top end unit (he went a bit mad, we never need that many! )
https://www.thomann.de/gb/hk_audio_elements_smart_base.htm