Your bike will correct it's own course, provided the suspension is not excessively mal-adjusted. This may include a "tank slapper'. As has been said here already, the best thing you can do is not make any steering input to the bars, keep on the throttle, & grip the hell out of your tank with your knees. That said, the best thing to do is learn to avoid the gravel. Your photo shows what looks like a clear path that the car tires have cleared. Last time I had a problem with gravel in 2010 it was not a tank slapper but a slam bam, broken bones thing. Reviewing the circumstances of that crash, there was a clear path through as well. Hope to see you out riding again soon Nivin. I don't recall you crashing up until now, so welcome to the club. Everyone that really rides crashes at one time or another, so don't worry about it & avoid the gravel.