To trigger stage 3, aka start of PIP.

Your supervisor/manager should already gave repetitive performance warning/reminder which you never heed.

This is the 'evidences' whether in past email/reviews/chat to remind you that certain things can't do or must deliver which you failed to meet.

So yeah, people who get PIP already getting warned by supervisor about their low performance. Just they don't listen and the tidak apa attitude as long my salary come in monthly.

Start look for job, there's no cap for number of PIP. you miraculously pass 1 pip (like 5-10% chance). few months down the road there can be another one. Also PIP are low performer which may not entitle to bonus/increment. bleak future in the company.

2 outcomes, pass and you stay. failed and you're out.

bro wake up, manager will have sufficient 'evidences' before trigger the PIP which is a formality process to terminate you.

End of PIP, failed will result in termination. Literally you're fired, get out.

don't be delusional, no such thing as letter advice you to resign if failed PIP.

3 months to resign gracefully and get a new job or failed the PIP, get terminated and leave a bad record. easy choice.