Squeaking while parked/cold/when try to steer?

Thanks for replying, so a mechanic told me that and we did adjust it and still same the belt is not loss we already check it out the belt not cracks or anything belt conditioner didn’t make any difference, I googled symptoms of bad rack and it’s a lot of the stuff the car has I’m going to reply video.

As you can see the car is parked and doesn’t want to steer in both directions, I’ve changed the tie rods and stabilizer bar, because at high speeds the steering wheel would shake also when breaking the steering would move so we change the rotors and the rotors made a big difference. However, when I’m going downhill and fast the steering wheel still shakes do at this point I want to change the rack and pinion.