How do I monetise this website? Need advice

Website:
https://innerpage.org

Description:
InnerPage is a privacy-centric digital journal where you can pour out your deepest thoughts and feelings anonymously. On InnerPage, it's just you and your thoughts... because personal reflection is meant to be just that - personal.

Problem:
Journaling is probably the cheapest and most accessible practice to improve mental health. However, due to the sensitive nature of thoughts/feelings that one might write down. (Problem is validated on multiple Reddit subs)

I developed InnerPage for personal use but decided to open it up after noticing that it might be helpful for others who has similar requirements as mine

Target Audience:
Privacy conscious people who write journal to improve mental health

Solution:
A minimalistic text-only journal without email or social signup. Users can set up an account with just username and password.

Advice Needed
Due to the anonymous nature of the product, I am unable to offer it like a traditional SaaS, as it required collections user data like email, credit card info etc. At the moment, I have a KoFi donation page linked. What are the other ways I can monetise this website. I am not looking to make a killer profit but InnerPage should be able to sustain itself