Applied at British Transport Police for Unknown

I applied for a position with British Transport Police last night, but unfortunately, I received a rejection email this morning. The email was just a generic response stating that they regretted to inform me of my rejection. I'm really curious about the reasons behind it, as I would like to improve my application if I decide to apply again in a few months. I'm considering reaching out to them for feedback, even though I know they might just send me the same generic response again. Has anyone else gone through this process and found out how to get more specific feedback?

I've been struggling to find job opportunities lately, and it's really frustrating. I spend most of my free time scrolling through LinkedIn and searching on Google, but I'm lucky if I find one job to apply to in a week. I know I want to work in emergency response, ideally in fields like fire, environmental, or civil defense. I'm also open to roles in police or medical services. The last job I applied for was with the British Transport Police on Tuesday, but I got rejected just a day later. Before that, I applied to the fire service back in June and faced another rejection. I'm really hoping to find more opportunities out there, but it feels like I'm hitting a wall.