Well, you didnât prove any videos or screenshots about the cookie issue so it is hard to understand how your phone is set up.
But what do you see if you go to Setting â Site Settings â All sites? and/or what do you see in Cookies?
When you clear data, how do you clear it? because you have to go to Advance and then set a time which by default is 1 hour, so you have to set it to all time if you want to remove it all, if not pretty much nothing gets removed.
But the thing is Cookie/Shield settings donât sync once you changed them, they will be independent, so anything can go wrong there since they will never be âin syncâ once something is changed per page even if globally Brave is set to whatever.
About your language, well, Android 13 added an option to set individually the language for apps, I guess it might have to do with it, because if I try to change the language on my phone it will not do it, I didnât change individually the app for Brave but I know it is an Android 13 change, and my guess is now Polish is seen as System unless you change it systemwide or by app.
If anything, you can just fix this by reinstalling Brave or clear the data. If you are worried about the passwords or anything, just make a sync chain, save the sync chain code for 10 minutes and then add it, you will get bookmarks and passwords and all.
Or you can also be a cool Brave user installing Nightly or Beta and then adding the sync chain there, making sure everything is alright and then remove Stable.
Easy fixes and there are ways like having multiple Brave builds in your phone and use sync chain to make sure you wonât lose any info, since it seems you only have your phone and no other device.
But it seems it is just a configuration issue, not a Brave one, I mean, an update could mess with files too, so it doesnât mean you misconfigured it but crap happens.