MacBook Pro freezes when pressure put on bottom left corner

You've given us a generic ID so I'll give you a generic answer.

You have crushed, or crimped something in that corner with constant, or one instance overpressure.

''After selecting the proper guide, studying it and the notes {not just reading it}, purchasing the proper tools)'.' Opening the box close examination with a Mark I eyeball and magnifier may find what is being pinched, or crushed and if you can restore the area to it's original configuration, or insert a shim to stop the crushing/flexing.

You'll want to correct the problem ASAP as the constant crashing can scramble your HD to the point it may no longer boot. Re-booting a frozen computer should never become SOP... that will eventually cease to be an option.

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