What's wrong with the truck?

I went for a ride with my grandfather yesterday. He told me to drive on the way back. I've driven this truck a lot so I know how it feels and drives. The first thing I noticed was that the steering was loose and shaky feeling (wheel moves with bumps). It's usually tight and very responsive. I also noticed the brake pedal felt kind of squishy instead of firm. What's wrong with this truck?
Added (1). It's a 2000 Ford Ranger 4WD.

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