Juventus performance last season wasn't really impressive compared to the previous seasons due to the lack of a sharp striker who can score as many goals as possible whenever he sees the opportunity to find the back of the net. They need to sign a good striker who can save them for wasting most of their balls when the chance comes.
Last season Juventus did started off as a top contender and they were in the top three at a time and afterwards a while they were found struggling to make it to top 5 which they later finished around top 5, I expected they would have won the league title or finish at the second position, they are good at some point and at some point they struggle so they need to do better this season. Their striker is not doing really bad but they needed him to improve with his skill and their defense has to be strengthened so they conceive lesser goal.
Last year they weren't really bad defensively, but this year they will need to sign a few defensive players to be better. The offensive players they have signed so far are good enough to bring them success. I think Juventus' offensive line is formed. They should definitely make transfers to the defensive area. If they can seriously improve their defense, Juventus certainly has a chance to win the Scudetto next year. They even took the lead in previous years, but couldn't keep it until the end of the season. This year, maybe they can achieve this success until the end of the season.