App Launch Marketing Campaign

I need help to organically market my new app. I want to have a very strong start to push the number of downloads from real users. Target markets are USA, Canada, Singapore and UAE.

My statup budget is very limited. No exaggerated proposals please.

I'm looking for a comprehensive social media marketing strategy across the following platforms:
- Facebook
- Instagram
- Twitter
- TikTok

Content Types:
- Images
- Videos
- Texts

Ideal Skills and Experience:
- Proven track record in app marketing
- Expertise in social media platforms
- Strong content creation skills
- Experience with targeted ads
- Familiarity with the USA, Canada, Singapore, and UAE markets

Please provide a portfolio and relevant experience.