to Talmud
while it is evident that the maharal was on a level to create a golem, the evidence suggests that he did not, not merely a lack of evidence that he did.
this is as I remember it, I can’t point you to sources.
first, several biographies written just after his lifetime make no mention of it, even one written by a son or son-in-law.
second, the whole legend of the golem was created by someone who claimed to have found an old sefer in a library called something like niflaos maharal. this person already had a record as a forger.
that is the only source for the maharal golem story.
again I do not argue that he had the power to do so, only that in fact, there is less than reason to believe that he did.