Am I on the right track?

Hi. I’ve just started making video clips and uploading them here in this month. So far, I have about 80 clips in my portfolio and have received no sales. Because I’m a beginner, I have a lot of questions about videography and everything related to making sales. It would be great if you could give me some feedback.

1. Quality
Are my video clips fine? I use SONY FDR-AX40 handy video camera. When I go out and record videos, I don’t bring a tripod, however, I am wondering if I need to use(buy) one. Especially I like making animal video clips. Do I need a tripod to record videos of animals?

2. Editing
I wonder if my video clips need more editing to make sales. Most of my video clips are raw. Sometimes I change brightness with iMovie software. When I edit my photos, I use Lightroom so I know how editing makes a big change. Do buyers prefer good looking videos or raw ones?

3. Demand
I am going to make more of animal video clips and I wonder if there is good demand for them. Am I on the right track?

I will appreciate your feedback!