Problem with "license has been used on too many computers"

No, it is tied to your computer…
At this stage your only hope is that SketchUp support is willing to free your activations, but as a Pro 2019 user you are not entitled to support anymore.
I would mention that both of your old laptops died without the chance of freeing your activations!)

try here: https://help.sketchup.com/en/contact-support/technical-question/form