American malls are three categories. Generally when people say "the mall", they mean big, indoor, enclosed malls. That's what is dying a slow death.

A local example for me:

https://en.m.wikipedia.org/wiki/Clackamas_Town_Center

The problem has been the large anchor stores are going out of business and the stores that remain struggle to survive.

The kind of mall you describe, Americans call "strip malls" and are much smaller and open to the elements. A grocery store, maybe a bank, fast food, not an official post office, but a pack and ship location, sometimes a DMV. That kind of thing.

Strip malls also struggle, there's one by my house where the big grocery store just closed leaving it maybe 50% vacant.

We also have stand alone grocery stores that aren't part of strip malls that collect other small stores around it like mini-moons. Barbershops, laundromats, liquor stores.

As long as the grocery store operates, everyone does fine.

Edit Almost forgot... "Big Box Complexes". Not really malls, just large block stores sharing a common parking lot. So like a Target, Home Depot, Best Buy, all stand alone stores with shared parking.