Manchester City is not in good form now, it can be seen. Manchester City has lost four consecutive matches. This is not a normal occurrence. We have not seen Manchester City lose four consecutive matches in the last 5/7 years. From this, it can be assumed that Manchester City is not in good form. At the same time, Guardiola is under a lot of pressure.
Manchester City don't have good form recently and it is even true to say they have terrible form. Even before the serious injury of Rodri, there was prediction on downside of Pep Guardiola era is coming, because some main players in his squad have been becoming older and surely their performances will only become worse with time. Kyle Walker now is no longer strong and fast enough to beat attacking players in dual races. Some other positions began to show signals of decreasing performances too.
The injury and absence of Rodri actually affects Manchester City operation a lot, but it is not only one reasons for their terrible form.
In the last few seasons of the Premier League, we have only seen Manchester City's dominance. City is a bit off form this season. So it has become easier for Liverpool to occupy the top spot in the table. It is expected that Liverpool will be the Premier League Champions this season.
Any domination from any club has to end, we saw it with Lyon in Lique 1, Juventus in Serie A, Barcelona in La Liga, Bayern Munich in Bundesliga. The domination of Manchester City in Premier League can end in this season and it's not only their failure to defend their title in this season, but it can last longer like next several seasons, they will fail to win a league title again.