crash on take off

Quick fpv view of a crash on takeoff because I forgot to secure the battery and it slid forward. Glad I got it on video and luckily it's repairable I think. Hopefully this works for the video https://photos.app.goo.gl/ivwZxymf1uqBJiEe8

My quadcopter is Eachine QX95 , Reciever is X6B and the transmitter is FS I6 . I am facing a problem ,where when I throttle , the drone make a brief takeoff and then just lands and gets unarmed automatically and I had to arm again and again and again and all I am getting is a short 5-10 cm...

My quadcopter is Eachine QX95 , Reciever is X6B and the transmitter is FS I6 . I am facing a problem ,where when I throttle , the drone make a brief takeoff and then just lands and gets unarmed automatically and I had to arm again and again and again and all I am getting is a short 5-10 cm...

Okay, I'm puzzled. I'm new to the hobby of RC Planes. Since I knew that I was gonna crash at first, I went for the foam board building and I bought necessary electronics. As of now I've built 5 different planes. 2 from other sites (The maker hanger 2 and the mermaid.) 1 try at my own design and...