“Yaakov avinu lo mes IS literal.”
Its not. (unless you dont know what literal means or what mes means)
teh passuk says ” וַיִּקְבְּר֣וּ אֹת֔וֹ בִּמְעָרַ֖ת שְׂדֵ֣ה הַמַּכְפֵּלָ֑ה” Either he had died before that or afterwards, either way though Yaakov Avinu literally died.
Now figuratively, that is another story, certainly in a manner of speaking (ie figuratively) he still lives, as chazal say “Yaakov avinu lo mes