To use the new presets, after installing the new presets, go back to the library and open any photo you want to edit.

Swipe left at the bottom until the Presets icon appears, then tap on it.

 

Look clearly and make sure the Preset Group that’s selected is the one where you saved your new presets.
tap any preset in the list to edit your photo, and then tap the check mark to confirm that the preset is applied.

You can also make personalized edits and adjust different parameters.