I'm stucking on SS RDX, can someone help me?

on 6 PM, My phone was having a problem. It says that UI System didn't responding and that notifications appears several times (roughly 3 times), and when I'm waiting for a while I stucked on SS RDX and I can't get out of it. There are several texts there

I don't want my data lost, I cant do these 4 options because my volume button has lost except for PC. Please help

There are 4 options :

[TO PC] Connect a USB Cable or

[TO SD] Press Vol. Up + Vol. Down

[RDX AGAIN] Press Vol. Up + Powerkey 3 sec

[RDX EXIT] Press Vol. Down + Powerkey 3 sec