Expert Needed to Boost Downloads and Monetize "Simple Business Card" App

Hello!
I am looking for a skilled freelancer to help increase downloads and monetize my app, "Simple Business Card," available on both Android and iOS platforms.

App Links:
https://play.google.com/store/apps/details?id=com.webonology.simple_business_card&hl=en
https://apps.apple.com/gb/app/simple-business-card/id6458877134

What sets "Simple Business Card" apart:
Privacy-Focused: Unlike similar apps, "Simple Business Card" does not require users to create an account or collect any personal data. All information is stored locally on the device, allowing for offline use.
What I'm Looking For:

Expert Advice: Guidance on strategies to boost downloads and effectively monetize the app.
Advertisement Management: Experience with ad platforms, particularly AdMob, to optimize revenue.
Marketing Plan: Developing and executing a marketing plan to attract more users.
Design Skills (Bonus): If you have design skills, it's a plus! Improving the visual appeal of the app and promotional materials could be beneficial.
Budget:

I am willing to invest around $500/month in advertisements.

Requirements:
Proven experience in mobile app marketing and monetization.
Familiarity with AdMob and other ad platforms.
Ability to provide actionable advice and implement strategies to increase app downloads.
Excellent communication skills and a proactive approach.
If you have the expertise to help "Simple Business Card" reach its full potential, please apply with your relevant experience and any success stories of similar projects.

Looking forward to working with you!