About 1:
Yes, I was saying that Smotrich and Ben-Gvir are not the ones in charge now, luckily for everyone. They are horrible people, and I believe that if they were in charge, they would commit crimes as bad as any that Hamas has committed. It's shameful that they are part of our government and as far as I'm concerned they should be barred from office in any decent country.
But no, they are not currently in charge, the majority of the government is not in line with their extremist views, and neither is the majority of the country. (Though views have certainly gotten more extreme after October 7th, predictably.) Their power in the current government is inflated because all decent politicians (the entire center and left) refuse to form a coalition with Netanyahu. And the populace have been protesting this government, with the backdrop of the judicial reform, in the largest protests in Israel's history, for the last year.
2. I do look critically at the majority of things the IDF does. It's not all perfect, there are many moral failures, like in any army. I think B'Tselem and the world in general look far more critically and without context at Israel and the IDF, compared to other armies.
Note, like most secular Israeli men, I served in the army (though not in any kind of combat way - I was a programmer). I also know many, many reservists serving today, as does literally every Israeli. There are a lot of Israelis with views I vehemently disagree with, but very few that would target civilians for no reason. (Though obviously take this with a grain of salt - my view of the IDF is still, at the end, anecdotal to me - my circle of acquaintences don't represent a true random sample of the army.)
I can't speak to The Great March of Return, I don't have any inside info here, I'll just note that the situation with the border is very complicated. Look at what happened when the border wasn't defended strongly, thousands of militants were able to storm in and slaughter thousands of Israelis, and drag all of us (Israel and Gaza) into a terrible war. Does this mean everything that happened there was justified? Of course not. But life's complicated.
I'll take specific note of something you said:
> They have also been killing children indiscriminately in the West Bank, what would justify that?
Nothing would justify that, but I don't believe that's happening. I don't think there are real, verified cases of the IDF targeting children, only of children dying as collateral damage.
> There are dozens to hundreds of other cases where the IDF has been incriminated for unjustified violence but I am not able to collate them for you at the current time. If that is not enough evidence to change your stance on the IDF, that nobody can help to change your mind.
I'll reframe this as a question, because I think it's a very good one. What would make me change my mind? Let's be specific, what would make me change my mind that the majority of operations the IDF is currently undertaking are "unjustified"?
1. Firstly, if I get convinced that the current aim of getting back the hostages or destroying Hamas is itself an incorrect/immoral goal, I'd be convinced current actions are unjustified. This is almost impossible to change my mind on - Hamas has invaded Israel and slaughtered civilians, and claim they will do it again and again. I don't see a way for Israel to avoid trying to seek Hamas's destruction. That said:
2. If I am convinced that the current war isn't the best way (or one of the best ways) of achieving the goal of Hamas's destruction, or of retrieving the hostages, then I'll consider Israel's actions unjustified. If we could pause the fighting, go back to the previous status quo, and stop Hamas by targeted assassinations or whatever over the next year, then it's not justified to risk so many civilians. I don't think this (or other ways) are practical, but I could be convinced otherwise.
3. If I see evidence that the IDF systematically targeted civilians without any justified reasoning, I'll consider the way Israel's waging this war unjustified. Note that I say systematic - I'm sure many individual horrible cases have happened (and anyone doing this knowingly should be arrested, though I doubt they will be), but on the whole targeting is aimed at legitimate targets.
4. If I see evidence that the IDF is knocking down civilian infrastructure without any legitimate military reasoning, but rather only in order to cause damage in Gaza, I'll consider this illegitimate, though a lesser crime than other accusations. (It would probably be considered ethnic cleansing if the goal is to e.g. make Gaza uninhabitable.)
I think those are all situations where, were I to change my mind on what is actually happening in reality, would make me change my mind on the legitimacy of the current war.
I think it would be a good idea for you to do the same as me - what would make you change your mind about the current situation?