I have some questions about writing a privacy policy for a Chrome extension. Any advice?

[juuu o]

I've developed a simple Chrome extension app that uses in-app purchases via PayPal, hoping to make a little extra money. I'm stuck on the part where I need to provide a privacy policy link for the review process.

I'm using Supabase Authentication for logins, with Google as the provider. Payments are handled through PayPal. Because transactions between Koreans are restricted, payments are currently only available internationally (the target users are foreigners). There's no account deletion feature.

Personal information isn't being used for anything other than checking payment status. The structure is very simple, with only two tables... I've noticed that most Chrome extension apps don't seem to have an account deletion feature. Because of this, I'm also wondering how the data retention period is handled. Since the target users are foreigners, I'm also unsure if I should follow Korean standards.

Given my current situation, how should I handle writing the privacy policy? Do I need to pay for professional consultation? Thank you.