Clunk noise when braking?

It sounds like you have a brake caliper slide bolt that has fallen out or is loose, to be sure let's raise the front of the car and remove the wheels, these guides should help:

https://www.2carpros.com/articles/wheel-removal-and-re-installation

and

https://www.2carpros.com/articles/jack-up-and-lift-your-car-safely

I have included what you should be looking for in the images below. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Oh my, I never thought to even check the caliper bolts. My left side bolts were loose. Thank you so much you saved me a lot of time and a headache of going to a mechanic.

Thanks for letting us know, we are here to help, please use 2CarPros anytime. Can you please leave us a rating? (Copy entire link)

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and

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Thank you.