Sims 4 get to work bakery

yes you do have to open your  own bakery   if your not good at building try the gallery for other peoples builds

edit i forgot to mention too in build mode in the styled rooms section there is a styled bakery room

you buy a retail site and then you build the Bakery to the way you want it,

where the retail builds are there is a lot that has got no building on it.

you could start there .. goto map screen then where the retails are then on the empty lot select build.

then you sims can buy it.