From time to time, you need to download files into your android device, but the downloaded files always end up in the default folder. Is there any way I can change that default folder or make the device prompt me every time I need to download files?
I don't think this is possible. However, here is a very good file manager you could use to move the files after downloading: ES File Explorer
on Samsung, swipe down, go to settings (gear icon upper right) search for sites and downloads
WAIT - scroll down and DISABLE SAMSUNG Internet! TURN IT OFF!
then scroll up to "Sites and downloads"
"Save downloaded files to" NOTE: ONLY when Samsung internet is OFF will the option to save to SD Card will become available. I then simply pointed to the Download directory on the SD Card
This process worked on my Samsung 5G FE (Fan Edition) phone.