Need help figuring out if my resume is the problem

I’m honestly at the point where I can’t tell if my experience is the issue or if my resume is just not doing me any favors.

I’ve been applying for a while now and getting very few responses, so I started reworking it again. At first I thought I just needed a cleaner layout, but now I think the bigger problem might be how I’m presenting my experience. Some parts feel too vague, and other parts probably sound more like duties than actual impact.

I used Kickresume a while back to rebuild it because it was easier than fighting with formatting myself, and I liked that it helped me tighten things up without making everything sound overly robotic. It definitely made the resume look and read better, but I still feel like I might be missing something.

What usually makes the biggest difference for you guys? Better bullet points, better tailoring, or just a simpler format overall?