As i always hammered here: Israel doesn't want regime change, but total regime collapse with full US involvement, partition of Iran into 12 states, pipelines of free Iranian oil and gas directly to Israel and Europe to finance their next wars (probably Egypt or Turkey or Pakistan)
Israel is not able to accomplish this by itself, but has a chance with total US involvement both in air and ground, but even this would be a massive task for them as the recent war told us that Iranians are more united than ever in times of war, and that no riots or uprisings will happen in times of war