iPad turning off suddenly and then flashes apple logo then back to black screen. it is in some sort of a cycle. What should I do?

I got the iPad 7th generation not too long ago. However, the iPad for the last three days hasn't been working great. It would sometimes shut down suddenly. the first time that happened I was able to fix it and it was working just fine. it happened again yesterday but instead of just shutting down it shut down suddenly then showed a white screen with the apple logo for a few seconds before showing a black screen again and then after a few seconds it would go back to the white screen with apple logo. This keeps happening so it is sort of in a cycle. I searched the web and apparently it is software problem. tried pressing and holding the home button and on/off button at same time and releasing it when the apple logo showed up but that didn't work. At one point the iPad showed a screen telling me to connect it to the computer and to go to website: support.apple.com/restore (I think that was the one). Told me to either update or restore and I clicked on update. it supposedly downloaded something but after it was done nothing new happened. What should I do?