I agree with everyone else.
Don't worry about the weight.
My advice would be to go a little lighter for a while, stay in the mid-range, meaning down to a parallel squat, if that works for you, and back to just before lock at the top, keeping the tension in the thighs as you squat down and up, kind of like a spring.
As has been said, work on form.
I'm used to love squatting.
I have a low back issue and squatting even 135 locks me up tight for about a week, so all I do right now are leg presses.
For deadlifts, you might want to try the same, like a Romanian stye, where you can start at the top, out of a power rack, and then lower to about an inch or two above before the plates hit the floor, again keeping the tension in the back at all times.
If you are persistent and take the ego out of it, you'll find what works for you.
I WISH I could lift like I used to.