It is really easy to get back deleted notes from iPhone. You will find there is a recently deleted folder on iPhone. You can find all the deleted notes on your iPhone within 30 days. You can easily find them and restore them to iPhone. If you can't find them in this folder, you can also recover deleted notes on iPhone
with iPhone data Recovery software. it can scan your iPhone deeply and find the deleted data for you. Besides notes, you can also recover deleted messages, contacts, voice memos, photos, videos, call history, reminders, Whatsapp messages and other deleted data for you.