Looking for a beginner-friendly tool that can create AI UGC videos and images for products

I have hardly tried 2 to 3 tools to generate ai ugc videos and photos for my products. I keep seeing this crazy AI ugc content on different social media. Brands are creating product demos, avatar holding product videos, AI-generated images for their products and many more things. I tried, but I feel it's hard to do so, as I am new to this, and I feel nothing works for me, or maybe I am doing something wrong.

I would love to hear from people who have actually created AI avatar content for clients or brands. Your suggestions matter a lot.