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. 
Even though Salah made a good contribution to Liverpool, of course Liverpool shouldn't just depend on Salah, they should be able to recruit other talented players to strengthen their team, whether it's their defense line or their attack line. Liverpool can develop if they can find performance and talented players, or Arne Slot must do his best to make his players more consistent. But you have to remember that competing with Manchester City is difficult.