With those requirement, the first question you should ask yourself is whether you really want e in your bike at all.
What are the reasons you want an electric bike over an acoustic one?
Next is what you're going to be using it for. You said it was for the daily commute. A commute can be anything from a 5min ride through a quiet neighbourhood to a 1h ride through the forest and countryside.
Distance, terrain, traffic etc. make a difference on what kind of bake suits your best. How does (or will) your commute look like?
I recommend going to a local bike shop that sells ebikes if you have one near you and trying them out for a ride. I have a tern HSD (not exactly cheap) but there's a lot of competitive options. Do you plan on only commuting or like grocery runs?
My advise is to avoid Chinese (or similar) bikes because they have problems on distance. I'm riding now on Nakto Fashion and already did reparation in mechanical part and re-soldering some wires in battery and steel some issues pending..