I don't know what has happened

[AC Question]

About 2 weeks ago I was playing my phone and it turned off and went into this odin mode saying it was downloading something and not to turn it off. I took out the battery and put it back in then my phone starting acting up: randomly turning off vibrating then on the second vibration turning back on, freezing and just not letting me do anything all the way up until now. I was playing it and it turned off and said it was doing a recovery boot and took me to this menu and I tried to reboot it and it kept doing a system update then appearing with a dead robot with the letters 'No Command' I have taken the battery out and have done all the other things that usually fix this but to no avail. Please help me it keeps doing this and now I can't even use my phone. Thank You.