My device:- Iqoo neo 7 running on latest updates

Issues:-

1.when i shift my screen color from standard(default) to professional then why lock screen is still showing vibrant colors. Every time i unlock my phone i see color shift from lock screen(vibrant) to faded(professional) ,it looks so cheap.PLEASE FIX THIS ISSUE🙏

2.whenever my battery goes down below 20% then battery saver turn on automatically and screen refesh rate shifted to 60hz and after complete discharge ,when i power on my mobile back it still stuck to 60hz.It should be shifted back to whatever my screen refesh rate setting(120hz ,smart switch).After this i have to manually change it from settings .It only happens when phone get switched off due to low battery and battery saver is on before switching off.

3. If i put some white photo as wallpaper then home screen notification items like battery percentage 🔋, networks signs 🛜 etc color changes to black so they are visible in white background ,but in lock screen they are still white and they are not visible. And during unlocking my phone their color changes from white to black.

Kindly fix these MAJOR issues with software update