Whether Ronaldo goes to Roma or not, one thing is certain for me that Roma should make their squad more powerful in the summer. They made a big improvement generally last season. Jose Mourinho's coming there helped the team a lot about being more successful. They won the Europa Conference League. It must be time they were more successful in the Serie A as well. If they bring the right players to strengthen their squad they can fight for top 4 very seriously.
CR7 joined Juve which in my opinion was more powerful than Roma but they failed to add something. I don't see him able to add something alone for Roma.
If Roma want to claim an european league, or fight for the scudetto they have to strengthen the whole team. I have no doubt about Mourinho abilities and CR7 ones but a single player won't achieve anything alone!
I will wait for the end of the transfer window to have a clearer idea about Roma and the other teams. So far I don't see a game changing transfers.