Manage digital marketing accounts for mobile app - specific period

We have an online grocery app (Android - IOS) that provides the below services:
- Grocery
- Butcher
- Fresh fruits and vegetables, and more other services

the app is currently running on one area (El Shaikh Zayed - Giza- Egypt) with population of almost 600,000

We have been running a digital marketing campaign for almost 3 months, but we feel that the campaign performance is less than expected.

We are looking for some expert/consultant who will be managing our ads accounts with the aim of increasing the conversion more that the current stats for a specific period of time (2 weeks) with minimum budget adjustments


Ads accounts:
Google Ads Account
Facebook Ads Account (Facebook and Instagram)

The target conversion is as below:
1- increase no. of app subscribers (currently actual subscriber from our Database 1-3 daily)
2- increase no of Orders (currently the orders volume is from 2-4 daily)

We would want someone with the necessary expertise to handle both accounts from Ads management point of view and also as a consultant for any enhancement that can be made in our process regarding marketing strategies.

App Market links:
https://apps.apple.com/sa/app/ushopya/id1553073317
https://play.google.com/store/apps/details?id=com.ushopya.customer

Facebook page:
https://www.facebook.com/ushopya

Instgram Page:
https://www.instagram.com/ushopya/