On average, the polls had Clinton ahead of Trump by 3.2%, and her popular vote margin was actually 2.1%, so the polls were not far off -- see https://www.realclearpolitics.com/epolls/2016/president/us/general_election_trump_vs_clinton-5491.html .
Wrong. She ran up the score in LA county and Illinois (illegal votes). Most polls were an even cross section of the country. Try again.
Why do you suppose Trump was given only an 8% chance of winning the elections? Think about that. State polling was even worse. There was no polling data predicting that Trump would win 30 states with 306 electoral votes on election night. Nice try though.