If Arne Slot does not have good experience in coaching, it will be difficult for him to maintain the standard of the team the way Klopp left it because the club will be too big for him to manage those players. In the beginning we might not see it because the players already have a game pattern that the are used to which Klopp taught them. It will survive them next season but as time goes on Arne Slot will not be able to get good results because it is not from him.
On the other hand, he might learn as he is coaching them and improve his knowledge on how to improve the team performance. It will be a difficult task for him next season but let's see what he gat.
If Liverpool management signs young players like Chelsea, I believe Slot will struggle to build the team. Liverpool is a big team in the Premier League, and they have a lot of older players who have been in the club for a long time, so the players may get used to Slot so easily, Klopp has already left the club, now it is the Slot era, and the team needs major changes. However, I know the Premier League is not simple, but we should not underestimate Slot at this stage, he has managed a big team that played in the previous Champions League. I am confident that Liverpool will finish among the top four next season.
In my opinion, an experienced manager will only struggle to improve the club if all of their players are young. If you look at all of Chelsea's players, I don't believe any of them have stayed more than two seasons there, and they are all new to the club. But Liverpool are all good, they will play at a top level next season, but I do not think they will win a trophy.