Astral projection(first time experience)what happened ?

Hi,I’ve been reading about astral projection for a while and decided to try it out for the first time.I tried a couple techniques but didn’t put much effort.I woke up in the morning today and fell straight into sleep paralysis(I knew I had a great opportunity to leave my body)and got intense vibrations,I tried leaving my body and saw a flash of random images but nothing happened..I then woke up a bit angered it didn’t work so I shut my eyes in an attempt to induce vibrations(paralysis) again,I got them a bit less intense and weaker this time and attempted leaving my body but it didn’t work...So I tried a 3rd time...I shut my eyes and tried to relax again..this time I got mild vibrations and then all of the sudden I found my self hovering on the side of my bed..I checked to see if my body was there but it wasn’t..I uncontrollably floated around my house going into different rooms for about 30 seconds before waking up..I was completely relaxed it felt great but my 2 concerns were why I had no control over where I went and why I couldn’t see my body..