Facebook Ads Expert to Boost E-commerce Sales

I have an ecommerce store selling useful gadgets. My current sales revenue is less & I am looking to significantly increase that using Facebook ads.

Key requirements:
- Proven track record of successful ecommerce advertising on Facebook
- Ability to identify and target the right audience segment for useful gadgets
- Strategies to optimize conversions and increase sales revenue

Please share a brief overview of your approach, any relevant experiences, and your estimated timeline for achieving tangible results. Experience in the gadget niche or similar niches will be preferred.