PSG went berserk, beating Lyon in the first half with a score of 0-4. Playing away doesn't make PSG weak, because in reality Lyon can't do much to stop PSG movement. It's really unfortunate, because basically Lyon is also in a bad performance at this moment because they have played three matches but Lyon didn't get a win at all. Therefore, it would not be strange if PSG were able to beat Lyon in this match, because basically PSG is the one who has improved their performance in every match, and then against Lyon which is in a slump. So of course, PSG can take advantage of the bad conditions experienced by Lyon to win big in this away match.
everything PSG did in yesterday match was amazing when they were left behind by points from Monaco who currently dominate the top position in the league 1 standings and it is quite convincing that betting on PSG was definitely very profitable yesterday. on the one hand, PSG opponent is not a strong team like Lyon, which has never won. winning at all since the start of the season and this gives PSG the opportunity to get more scores to catch up with Monaco points and I think this is like a strong threat to Monaco which is currently in very good condition so that while it is above PSG.
if PSG continues to perform consistently like yesterday match Im sure at the end of the season PSG will still hold the league 1 title even though later in the UCL PSG will fail again but at least the league 1 title is more than enough but if indeed Mbappe is able to maximize his performance in the UCL there is little chance of pass to the next round.
Mbappe scored 2 goals in yesterday match and added two more goals from Hakimi and Asensio making PSG have an advantage over Lyon which only managed to score 1 goal, and from this victory PSG pocketed full points so they could climb to second place.
If Monaco loses in the upcoming match and PSG can win then it is certain that there will be a shift in the ranking of the Ligue 1 leaders and PSG will lead even longer.
However this will only happen if PSG can consistently play well as you said.
Regarding the Champions League there is still a chance for PSG to qualify for the last 16 and continue to the next round if Mbappe can still contribute well in every game.