I think Macron will win re-election despite his unpopularity. Firstly, like you mentioned his "right-wing" acting recently (its been going on for a while frankly) where he dog-whistles on kosher subjects to appear as though he is dealing with the immigration, multiculturalism and foreign policy issues. This might be enough to convince some "moderate" RN-leaning voters and swing voters to go for Macron over Le Pen, as he would be seen as meeting those points while also being the less radical and "dangerous" candidate.

Secondly, the left and especially the centre-left will rally behind him if the 2nd round is Macron v Le Pen regardless of what he does or says. This secures him on the left flank, at least in the 2nd round, and means he can concentrate on the right flank. I don't know any French leftist figure either who could potentially be competitive against either candidate in the 1st round.

Finally, the media will do everything it can to ensure his victory. It is in the interests of the Zionist lobby and global capital for Macron to win, he is currently the preferred candidate for replacing Merkel once she retires as de facto leader of the European Union and key ally of the Western world and he's doing his best to protect liberalism in Europe from falling.

edit: I think Le Pen could win if economic issues cause enough instability for Macron among certain demographics (by this I don't mean ethnic ones but industrial) and he does something to really put the left off from reluctantly backing him.