1)He knows he will lose the EV BUT the american talibans need a new narrative after the election.This new narrative will be centered around the Popular Vote.Being all over the map including places where he has no chance of winning is part of this strategy.How to energize the base in places like PA or MN to deliver few more thousands votes could help achieve the goal.It's all about popular vote.
2)The short term goal is of course to create the false sense of competing and allow some pundits to reharsh the horse race for few hours.