Each player has their own ambitions to pursue their career. Lukaku is indeed confused about his future, so he has made several decisions that threaten his own career. I think he still has the desire to play at a high level even though he was willing to have his salary cut when he agreed to wear the Roma uniform. In fact, Lukaku also received an offer from the Saudi Professional League but he didn't budge. So I don't think Lukaku is thinking about happiness with a tempting offer from a Saudi club but he prefers to play in a competitive league like Serie-A, maybe he also sees that opportunity to be called up to the Belgian national team.
Despite liking to move clubs, Lukaku can still have very good principles. Keen to stay in Europe with the aim of securing his place in the Belgium squad for the upcoming EURO 2024 in Germany, Lukaku is still the top scorer for the Belgian national team so far. Lukaku joining AS Roma will have a good impact on Jose Mourinho squad, especially since they have worked together before.
It is possible that Lukaku will move to the SPL after his loan spell ends in Rome, and it will coincide with the completion of Euro 2024, I think this makes a lot of sense.