Moreover, so far the player that Liverpool really relies on is Salah and he only has one season left with Liverpool, if Salah leaves, maybe Liverpool chances of getting the title will also be further away because currently finding truly great striker is very difficult.
Isn't it just a difficult opportunity to get the title every season? In the end, Liverpool failed and Manchester City remained champions in the EPL and won the title four times in a row and also dominated the EPL well, so in my opinion, even if Salah leaves, of course he won't. It also affects Liverpool's playing performance, even though he is always relied on to score goals, but actually Liverpool can still find players who are better than Salah. There are many young players who are talented and more productive than him. If later Salah leaves Liverpool and Liverpool gets players. The substitute then won the championship title, of course it will make all his supporters aware that all this time Salah was not a player who could really be relied on when playing at Liverpool. 
If we're talking about the last 2 seasons yeah that's true Mo Salah is not Liverpool mainstay player because its performance continues to decline from season to season like in the last season, we no longer see his name on the top scorer list we saw new names there such as Cole Palmer from Chelsea, Dominic Solanke from Bournemouth and Ollie Watkins from Aston Villa. This is proof that Liverpool golden era is over and they have to rebuild the squad with a new coach, the same thing with Manchester City they are getting closer to this situation.
On the other hand, Chelsea and Arsenal are approaching a golden era when they start to come together in every match. I wouldn't be surprised if Arsenal and Chelsea are candidates for the title because this indication has been visible for the last 2 seasons, especially Arsenal. What about Aston Villa? they are still the same gray as Newcastle I mean consistency cannot be guaranteed from season to season.