although UEFA has made this tournament as competitive as possible, many countries consider the UEFA Nations League event not so serious, so it is only natural that many great countries have to fall from several dark horse teams, even though there are trophies up for grabs for the end of the season but many countries don't want to take this competition more seriously like the EURO or the World Cup, maybe we really hope that in the next 2-3 years the UEFA Nations League will become a more serious competition for European teams to participate in.
This was quite normal as there wasn't anything to be very proud of as a result of that. but indeed it may be more interesting for the next few years but there has to be something to be proud of like the world cup or the euro so that the participating teams can be more intent on competing in the league of nations.