How to make digital ads?

I'm currently looking for a digital advertising platform to help boost my business's online presence. There are so many options out there, and I'm having trouble deciding which one would be the best fit for my needs. Specifically, I'm interested in platforms that offer comprehensive analytics, ease of use, and good customer support. Cost-effectiveness is also a big factor for me since I'm working with a tight budget. Has anyone had experience with a platform that meets these criteria? Any recommendations would be greatly appreciated, especially if you can share some specific details about your experience and the benefits you've noticed.