Is funny how Brazil has an easy time in Copa America and qualifiers and then come the world cup, they lose to some European team in the quarter finals
Unfortunately we play the South American qualifiers that are basically 8 teams that play defensive against us and Argentina (I can remember a few times Argentina tried to play offensive against us and we destroyed them, so they usually play balanced or even defensive), then we get to have friendlies against a bunch of shity teams from all over the world (minus Europe) and guess what, they all play defensive as well.
Meanwhile in Europe they have the Euro qualifiers and the WC qualifiers (both of which are filled with bad teams but even in those scenarios you are very likely to play against an average level team that needs to win so they will at some point play offensive). On top of that there is now the Nations League, which basically erased our chances of getting a friendly with (any) European team because they are busy playing the Nations League while we are probably travelling to Qatar to play a friendly against New Zealand or Canada.
So while Brazil plays 4 years against, 95% of the time against average or bad teams playing defensive, the best European teams are often playing against themselves (Nations League) and even when they play against bad teams it is possible that they will face different strategies every now and then. In the SA qualifiers if we are winning 1x0 the opposing team might pressure us in the end but they are still afraid of conceding the second goal because of the goal difference, they dont mind that much losing 1x0. In an Euro qualifier if you are an average team (say Switzerland, Poland, Sweden, etc), you are playing against the favorites (France, Spain, etc) and only one team qualifies in the group then you better go all in and try to score because in reality this is the only match that matters, there is no way the favorites are gonna lose points against Lithuania or San Marino...
I'd even add that because our players are in Europe and the qualifiers are in SA we probably lose 1 day of training due to travel and even so the players are not instantly jetlag-free so training quality is probably less than ideal.
Sounds like a lot of excuses to use next year LOL but I have a good feeling about the next WC
edit. I am aware the Nations Cup is a recent creation, my post is more about how it will be difficult for Brazil to get well prepared for future World Cups than an excuse/explanation of why we didn't do well in 2018/2010/2006. 2014 was the 7x1 match but that was in the semis so it was a decent showing with 2 terrible matches (3x0 in the 3rd place match)