Are you saying Inter Milan had a strong team last season under Simone Inzaghi? A team who couldnt win a single title last season, they got knocked out in the Coppa Italia semi--finals, lost to AC Milan in the Supercoppa Italiana finals, finished second in the seria A table and shamefully lost to PSG in the champions league finals.
Inter Milan's squad was strong. Even the strongest squad in Serie A was Inter Milan. But even then Inter Milan could not win a single title in the entire season. This is a big failure of Inter Milan.
Inter Milan basically lost every title because they focused only on the Champions League matches. The team qualified for the Champions League final. However, Inter Milan faced a shameful defeat against PSG in the final.
Inter Milan had a big chance to win the Coppa Italia and Serie A titles. But the team played badly in important matches. For example, they lost by a large margin against AC Milan in the Coppa Italia. Inter Milan would have been the champion if they had won the match against Lazio in Serie A.