Compared to Belgium, which will face France in the round of 16, I think Romania is a little lucky against the Netherlands in the round of 16, even though it is equally difficult, Romania still has the percentage to be able to beat the Netherlands in the round of 16.
Netherlands are strong but they are weaker than France in quality but both Belgium and Romania will have very difficult matches in round of 16.
In the Group E phase it was quite fierce and I think Romania's success in becoming the leader of the standings was because Belgium did not perform well at this Euro.
The failure of Ukraine is sadly and it's weird to see all four teams in a club with same total points (4 points) but Ukraine have to go home. Belgium were fearful in that match and in very last minute, with a corner kick, they tried to prolong their ball possession because they did not want Ukraine to have a counter attack and defeat them at very last seconds.
In the group phase, England have not shown an impressive performance, but I don't think they will have any difficulties in the round of 16 against Slovakia.
And what happened in the group phase cannot be used as a reference, there is still a big possibility for England to improve their performance if you look at the squad they have.
England did not satisfy their fans in first three matches but with star players they have, they can wake up and play better. After a semi final in World Cup 2018, a final match in Euro 2020, expectation on England team is very high and Southgate said that he has his plan to step back if England won't win Euro 2024 title.