Give a New Shape to Your Android Phone

Android was always an open-source platform and developers used to create customized ROM and apps but in recent years, Google has restricted so many steps for security purposes. However, you can still customize your Android phone by using the following third-party applications:

Parallax 3D: This app works with a gyro sensor and shows a 3D effect. It’s easy to add wallpaper from this app with several customisation options. It separates images into layers and the layer(s) move at different speeds while orienting your device. 

Dynamic Island by dynamicSpot: Apple was the first to introduce 'Dynamic Island' on iPhone 14 Pro and after some time Android phones started copying the same on a software level. If you want your Android smartphone to look fancy like Apple, you can install the 'dynamicSpot' app via Google Play and experience the Dynamic Island.
The app is free of cost, however, some premium functions are chargeable.

KWGT, KLWP, KLCK: If you want to save your battery consumption by not creating a heavily customised wallpaper, you can rather go with KWGT, KLWP, and KLCK. These three apps have a long list of customisations. KWGT is a widget maker, you can easily change size, colour, and fonts. 
KLWP is a live wallpaper creator but is only limited to wallpapers. In parallel, the KLCK app is limited to lock-screen wallpaper customisation. 

Always On: Apple recently launched the 'Always-On' feature for iPhones but Samsung phones have had this feature for a long time, even before Apple. In case, you don’t have this feature on your phone, you can install the 'Always On' app.  This one will let you see time and notifications without touching your phone. Not only this thing, but you also get a lot of designs for the clock and date.

Nova Launcher: This is one of the most famous apps for home screen UI in the Android world. You can select themes, wallpapers, and icon styles. There are many websites where you can get themes based on your cartoon characters. 

Nova Launcher is partially free, you need to get a premium version to use the app fully but it's worth it. You can customize your caller notification panel, status bars, and much more!