Here are some steps to clear cache on your Samsung Galaxy S8:
1. Go to Settings and then the App Manager.
2. Select the app you want to clear the cache for.
3. Tap Clear Cache or Clear Data.
If you want to clear the app cache for all apps, go to Settings and then to Storage. Select Cached Data to clear all app caches simultaneously.
You can also go to Samsung Folder and then Samsung Members. Tap the RAM and Storage icon and then FREE UP NOW.
Another way is to go to Settings and then Battery and device care. Tap Optimize now to clear the app's cache automatically.
