Not knowing what Michi is capable of I can vouch for the fact that what bread Lidl and or Aldi bake-off does not come close to what I'd call great.
When I was in Munich in December 2022, I made it a point to eat various things that I make myself in Australia because I can't otherwise get them. (Strictly for research purposes, of course.) I ate Thüringer Bratwurst, Rügenwalder Teewurst, Weißwurst, Leberkäse, rote Bratwurst, Milzwurst, Schwarzgeräuchertes, Semmeln, and (of course) lots of Brezen.
I bought Brezen from run-of-the-mill supermarkets (Lidl and Rewe), which sell them very cheaply (around 0.25 € each). I also bought them from old established bakeries, such as Höflinger-Müller, Neulinger, and at Viktualienmarkt (at around 1.25 € each). And I ate them at traditional Bavarian restaurants (Weißes Bräuhaus, Görreshof, Hackerhaus).
I don't want to brag, but the Brezen I make are better than any of the ones I ate in Munich. For a moment, I thought I was delusional. But when I told that story to my aunt, who is a highly accomplished Bavarian cook, her immediate reaction was "I believe that in an instant."
Things have changed. The Brezen I used to eat in Munich 40 years ago are not the same ones that are being sold today.
True, all of the supermarket Brezen are baked on the premises on the same day. But that's really a cheat. They are made on an industrial scale by machines, are par-baked, flash frozen, and then finished in the supermarket in a convection oven.
Similarly, even old-fashioned bakeries will typically not use a pre-ferment and just make the dough in one go, to be baked within a few hours of making it. That, and all the additives to ensure a consistent dough, even though the flour quality may vary, conspire to create a product that is still good, but not like the Brezen I used to get from the local baker when I was a teenager. (Back then, from the same baker, you sometimes got outstanding Brezen and sometimes merely good ones, depending on the flour, weather, and whether the baker had a hangover when he made them.)
If you want truly good Brezen, I encourage you to try the recipe I posted. These are likely to be the best Brezen you can get (almost) anywhere.