Is Huge Power Bunnelby possible before 1st gym??

So I’m running a mono-type Normal run of Shield. Have caught most of the Pokemon I can get for the run, but really wanted to try to see if I can get Huge Power Bunnelby/Diggersby. Did a ground type run a while back and wanted one but seemed like it wasn’t possible. But after a little research (unless im misreading something) it almost seems possible yet rare to get one through the raid dens. Been trying for 2 days to get one to pop up but having no luck. Is this search worth while or am I wasting my time and should just stick with Tauros and Kangaskhan (which you can catch before the first gym but that’s a different rant).

And before anyone offers to trade me on, the profile I’m using for this run does not have access to online stuff so trades are out of question.