CANT TURN PIXEL 6 A OFF

I tried to install GRAPHENE ON NEW 6 A

It crashed before the end
Now it keep bootlooping, as it lacks an OS to boot to right now.

i tried HOLDING POWER FOR 1 mIN (timer) no results

if i connect to another android, it put my android phone to off

I tried holding both POWER + volume down for 10 secs.. no results

Anyone can help?

Start the install processes again .

SOLVED! thanks