Ball is lying behind tree. I am r handed. If i take left hand stance I am on cart path. Can I take a free drop? Do I then have to play next shot as left handed?

Im assuming yours is a Right hand drive. There are three fuse panels.
The First is under the bonnet next to the battery.
The second is inside the glovebox behind a clip out cover panel. (Left hand drive cars have it behind the small drop down storage panel. This is next to the driver's left knee).
And the third is in the boot, on the left hand side panel, behind a removable trim cover.

The bridge is considered cart path. You get a free drop to the nearest point of relief (spot where you are not standing on the path or bridge and it does not interfere with the swing) no closer to the hole. Or, if the nearest point of relief is not a good option (ie. it's in the woods or tall grass) it's perfectly legal to play the ball from where it lies on the bridge.

It is an illegal shot and the player who made the 4 ball shot loses the game

prob a wheel bearing if you think its a tie rod just leave the car off and get under it and wiggle the long arms connecting the front wheels.
if its wheel bearing jack that tire off the ground and try to wiggle it.
ultimatly goto the tire shop and have them look at it.

change it