Marketing a live app on Shopify App Store

Looking for an intermediate for a project. Must have experience in planning and running a marketing campaign.
Object: Increase our app's conversion rate.
* Note: Don't need to create a website/blogs...

What we are doing
- We have developed an app on Shopify App Store: ANSU Smart Upsell Bundles app
- App link: https://apps.shopify.com/upsell-bundle
- App status: Lived
- This app will help merchants create a bundle, and stimulate users to buy more products
** We have marketed this app on Facebook, Ads on GG, Shopify app store... but not really work like what we expected.

Required Experience
- Experience in planning and running a marketing campaign for an app on Shopify
- Knowledge of Shopify market

To be the best fit for this project you need:
- Ability to communicate clearly
- Dedication to meeting project deadlines in a timely manner
- Knowledge of the Shopify market

If you are interested in this, please reply with your prior experience.
We located in Viet Nam