Reminder notification for subscription renewal

I am designing a paid monthly subscription feature (happens through PayPal only for now) that also allows users to cancel this subscription whenever they need.

Is a renewal reminder a good idea to implement? or should I just make an auto renewal and those who wants to cancel the subscription can do it from the designated section?

Most of the services like Apple Music never sends a reminder but I thought it would be more ethical to remind the users before deducting another renewal subscription fees.

What would the general user behaviour towards an auto deduction with and without a reminder?