Congrats on winning the cup.
I don't think they're is one correct/best way to play this game. Some want to reach the top level, others want to chase trophies. There are pros and cons to both approaches. For example, tanking is good for free/low-budget players, players that don't want to play the game year round. But if one is a highly competitive player, that plays year-round, it can make some seasons a tad boring.