and Iran wants to protect its influence in the region and considers Israel a direct enemy because Israel threatens that influence
That's what the propaganda wants you to believe.
The problem with Israel is its radical ideology called Zionism. The Zionists believe that anybody who is not a Zionist (a race that you can only be born into from your mother side) is an animal and has to be treated that way. (This is why they murder anybody including children so violently and without remorse).
They also believe that the world population must not exceed 1 billion and
they should cleanse the earth from non-Zionists which means murdering 7 out of every 8 human being on the planet and enslave the rest.
What they call "Greater Israel" is eventually a global dominating power that rules the earth.
This is the problem Iran and any other country in the world who knows what Zionism cult stands for has with Israel.
Otherwise Iran as the oldest civilization on earth that has deep rooted cultural and ideological links in half the world has had "influence" for thousands of years and that influence doesn't need protection specially from something as insignificant as Israel that is a foreign and unwanted object injected into the world.
Despite my supportive stance towards the resistance and my rejection of all Zionist practices, I cannot accept that Iran has hands clean. It is impossible to imagine that Iran defends the right and wants good for the people of the region. There is an Iranian expansionist project at the expense of the countries of the region, so we find it supporting any Shiite group and also providing them with weapons and money. Hezbollah in Lebanon, the Popular Mobilization Forces in Iraq, or the Houthi group in Yemen, are all armed factions that obey Iran's orders and represent its arm extending across the entire region. The problem has become more complicated because these armed militias have evolved into parties and their projects have shifted from resistance only to winning power in their countries and they have become a basic element in the political scene and are partially responsible for the internal devastation in their countries.
I believe that Iran has the right to aspire to expand like any other colonial power and to direct its policies to protect its interests, but I absolutely reject the logic that wants to portray it as an angel.
Currently, Iran is the only power in the region that openly opposes Israel and the Arabs must unite with it in resisting the Zionist project. But this should not make us forget the Iranian project to extend Iran's influence over the region.