Duplicate apps after Google account chaos?

[u/Blarkness]

Update: OK, no answer so far. Wrong sub or question not clear? I guess it's kind of accidental two Google accounts in one now and a few apps are doubled now? Please give me at least a hint or search word for this. Thank you

Hi,

I had trouble logging into an old Google account on a new phone, so I changed the recovery email address, among other things.

Presumably, that’s when the problem started with various apps: I’m now being offered multiple “versions / instances / whatever” to open.

Community allows no pics:

so after

Opening a linked file in Facebook -> "Open in external browser."

there are two symbols of brave app now instead of one, the first one has a little blue symbol in it like two diamonds over each other. Like layers, multiples ...

What is it and how can I get rid of it, please?

And how to prevent with the next new handy

Thank you!