Salah picked up a hamstring injury near the end of the first half of the Egypt - Ghana match. Klopp said that he had no idea about the extent of Salah's injury yet. I also hope not to see Salah suffering a long-running injury period. Otherwise it is a big issue for Liverpool not only in the Europa League but also in the EPL.
Because I believe they technically have a potential to win both titles this season. But without Salah this is just much more difficult to achieve.
Klopp wanted Salah to be back early at Liverpool but not like this.

I've discussed this in the Premier League thread. The wrong injury will make Liverpool experience a bad situation in every match. Liverpool will have difficulty competing in the Champions League and will have difficulty winning the Premier League title this season. It is said that Salah suffered a hamstring injury which is an injury that takes quite a long time to recover. I don't know if this news is true or not so cmiiw. If this is true then this will make Liverpool the favorite team to win the Champions and EPL in my personal opinion.
Sorry, I've fixed it. Maybe what you mean is that Liverpool is having difficulty competing in the Europa League, not the Champions League.
This is what Kloop was afraid of, but in the end it happened, that's why in an interview a few days ago he said he wanted Egypt to collapse immediately so they wouldn't qualify for the Africa Cup of Nations final, so he could quickly return to Liverpool. But now Moh Salah is injured, of course this will make Kloop dizzy. The injury suffered by Moh Salah is of course very detrimental to Liverpool at the moment because Liverpool has the ambition to win the EPL League and European League. Without Moh Salah, Liverpool will have difficulty achieving their ambitions. Indeed, currently Liverpool does not only rely on one player, but losing Moh Salah has made them lose strength on the front line and lose fear of their opponents.
Did Klopp really say that? It is really not his style to wish his players the worst with their national teams, it would surprise me if he did. But maybe you can share the interview if you find it. It is not typical for him.
The injury is said to not be serious, but I couldn't find very good and reliable information. But it could soon be over for Egypt anyway if they lose the game against Cape Verde.