Totenham has quality players. I mean they spent to buy players unlike what you said. Just check the front line of Totenham squad. They have;
1. Harry Kane,
2. Son,
3. Richardson.
These are quality players that can get any amount of goals to give a team title win. But I don't know what to say about Totenham. Ot could be that the management is the problem.
They are quality players but they had a terrible back to back season at spurs bar Harry Kane. Richardlison went all season without a goal to his name at Tottenham Hotspur; i do not see how the team wants to win the league title with such terrible return. Even Son struggled to impress last season which led to Spurs dropping out of the champions league spots in the League.
Is it a coaching problem? i don't believe so, Players form dip and theres nothing unusual in that aspect; The new spurs coach will hope the lads bounce back after a bad season.
Richardson actually had a goal last season for Tottenham Hotspur, though it is only one out of his 27 appearances for the season as a whole, and looking at it him as one of the dependent attackers of the club he ought to have done better than that but who knows, it might be the way of Antonio, because when you observed the goals that were scored last season for the team, it was Kane who did the scoring while other players do the rest of the assist and even though the club couldn't make it to the top four, it is fair to say they did very well.
There are high expectations from Postecoglou, if his style of making goals for the team changes, it will make a lot of impact to other players as many of them that are very good were all left in the dark with little to nothing to score but when a manager left a single guy to have about 80% of the goals is not impressive, Manchester City might have used Haaland in similar but other players had their share of goals as well.