Do you happen to know why the internal memory of a Samsung Galaxy A32 5G phone would suddenly start filling up? I've deleted cache and some apps, but it barely makes a dent and it fills up again.

It could be because some apps are still running in the background that may be using up resources, as well as content that has been downloaded, such as videos and pictures. You may want to uninstall any unused apps and delete large files that you no longer need. It may also be helpful to perform a factory reset on the device to start with a clean slate. Additionally, you may want to look into having more storage space on your device, such as adding a microSD card.