Can't change my ringtone 😭😭and the notifications sounds changed themselves

[elsba]

[Jacques88]

Step 1: Go to settings
Step 2: Open Apps or search for it.
Step 3: Click the button marked blue as seen in screenshot attached
Step 4: Switch on System apps
Step 5: Scroll way down to secsoundpicker
Step 6: Clear Cache and data.
Restart your phone and check if that worked.