What is a word to describe a person who lies to achieve a personal goals? [duplicate]
"Deceitful," "dissembling," or "perfidious" could work here within the right context.
From Merriam-Webster (https://www.merriam-webster.com/dictionary/):
Deceitful: having a tendency or disposition to deceive or give false impressions.
Dissembling: to put on a false appearance : conceal facts, intentions, or feelings under some pretense.
Perfidy: the quality or state of being faithless or disloyal.