we can't understand why a team like the European champions can't qualify for the world cup
I suppose the answer is that for a World Cup of 32 nations to truly be a World Cup, it can't just have the best 32 nations. It has to have representatives from all around the world. If it was just the best 32 nations, then no doubt Italy would be there... but Italy's gain would be the tournament's loss, because a best 32 World Cup would be mostly European, with a few South American nations, and maybe a couple from elsewhere.
The thing that makes a World Cup so great is that there are teams from everywhere, and a decent number of them, not just one token team from Africa, for example, but many.
And this also makes qualification more exciting. If most European nations qualified, then there'd be little sense of jeopardy in the qualification process. Far better to have limited spaces available.
Italy's absence from the 32 contestants who will take part in Qatar's 4th annual event this year is indeed a surprise to many, but that is football which is full of drama and surprises, especially since Italy was the European champion last season but they failed to qualify for the second world cup. after previously they also failed to qualify for the Russian world cup, this is also very disappointing for the Italian public but every match and also football provides drama and also a disappointment for their respective supporters.the world cup is not only represented by the European continent but almost all The world also participates in the 4th annual event but Italy's failure to qualify may be a disappointment for football lovers considering that Italy has a pretty good history in the world cup event.