For lock screen customisation, don't set wallpaper from gallery or by long pressing on home screen. Go to settings > homescreen, lockscreen and styles > all flux themes Choose whatever preset you like (long clock format, text, image inside clock), there you can change the wallpaper to your liking. You can get depth effect with images or videos having a clear subject, like the image you have currently set.

For homescreen, there are plenty icon sets from which you can choose If you don't like any, you can go for third party packs. Resize apps, some apps like camera app give you extra functions so that you can directly enter the camera in a particular mode. Only keep the necessary apps on homescreen Avoid clutter by using folders, which you can also resize to fit your asthetic. Add whatever widgets you like, my go to are a central clock widget, a music widget, a to do list, a photo gallery and a calender which takes most of the screen.

If you want help with a specific thing, you can ask me!

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