Their last match against Venezia in the final round was quite tense, but they managed to win and stay in fourth place. Roma also won their match and did everything they could, but unfortunately, they were just a little short of getting into the Champions League zone. Actually, maybe that's not the worst option, because in the Europa League it will be much easier for them to compete than in the Champions League. As for Juventus, yes, they need to strengthen their squad. If they don’t do it this summer during the transfer window, it will be very difficult for them in the Champions League.
Claudio Ranieri took over Roma when they were indirectly heading towards relegation. He came on board and changed the morale of the players and led them to qualify for a European championship. They were hoping that Juventus would drop points but it's not bad for them to play in the Europa. Claudio will retire from football after he has helped the club to get a suitable replacement.
Juventus should have a busy transfer season this year. They need to get more players that will help them to compete for many competitions next season. They were lucky to be in the fourth position with just one point difference.