You can increase the ffb sensitivity and that will tighten the on-centre feel on the g29. So much so, that it will oscillate back and forth bouncing off the motors on the straights if you crank it all the way.
Conversely, high ffb sensitivity can make it easier to spin a car and harder to recover, particularly with more responsive cars like the formula cars.
To elaborate on what Nick said, one of the core characteristics of my driving is using as little steering angle as necessary, and as little brake force as necessary. Keeping it simple, let's forget about everything else; turning the wheel slows the car down. The car accelerates more the less the wheel is turned. Tyre scrub increases drag on at the contact patch, a power steering car pulls power when turned, etc. So use as little steering input as possible to get the car to do what you want and it will not only be faster in the corners but it will get down the straight faster, too.
Turning the wheel also causes jacking. You'll notice, both in your real car and in the game; that if you sit still and turn the wheel back and forth thr nose will rise and fall. And one corner will come up, then go down. This is because of suspension caster, which causes the centre of the contact patch to change as you steer. Picture a Harley chopper, if you turn the front wheel all the way it lays over and the nose of bike is lower. Same thing happens in your car, but on both front corners.
If you are finding yourself crossed up on the wheel in a corner, you need to slow down and yaw the car in other ways, like braking and weight transfer. Rather than just turning the wheel.
One of the first things I teach a new student, is that when a car begins to understeer, you unwind the wheel. It is counterintuitive, as most people's brain tells them to steer more when the car won't turn. But try it, go out there in something in Sports Hards and blow the entry to a big sweeper like T1 at Yamigawa. Push the car into understeer, so it's all bound up....and then open the wheel and watch the car dive to the inside of the turn. Try it, you'll like it!
Back when I was spending a lot of time instructing at solo events, I would always hand out to my students a cheat sheet. It is geared towards autocross novices, hence the bits about downshifting, etc. It was also written in the 90s by a close friend and my first instructor, so some things like shuffle steer are mostly obsolete(that was from when cars had much slower steering ratios 25+ years ago) and you should park your hands at 9 and 3 and never move them in the sim. But, the rest of it is still valid advice. Pay particular attention to #11.
I still have a stack of these. I need to update that both for modern equipment(don't shuffle unless you have to like my 32 year old race car. Also need to make a road race focused version as I mostly instruct at the track now. Replace "cone" with "curb" and it translates pretty well. And yes, keeping your eyes up is important enough to mention many times. Still to this day, I catch my eyes dropping and I will even say to myself out loud in the car "keep your eyes up" and look ahead." #5 is a gem.
Best of luck folks!