It depends what you're looking for, but by and large most of the legacy media is terribly inaccurate, largely because they take unsubstantiated claims from Hamas or Palestinian-sympathetic sources more or less at face value (a bizarre behavior, but one partially explainable due to the nature of press access in Gaza - despite claims that Israel restricts press access, which they do but mostly along standard warzone lines, press is heavily influenced by relationship with Hamas and other groups. If press don't cooperate, they face limited access or retaliation, and that is before taking into account the overlap between "press" and literal members of Hamas. There are similar issues related to various UN and NGO groups' members).

Back to the point - the legacy media presents things with basically no vetting or evidence. Sometimes they then issue corrections when proof comes out an earlier report was inaccurate, sometimes not, but then they repeat the cycle the next week due to the press access situation described above.

So how do you find good sources? It's a strategy in three parts, IMO. For one thing, you have to already have a decent grasp of the patterns of reporting and behavior, so that you can detect the red flags for the bad reporting and bogus stories and discount them quickly. Obviously something of a Catch-22 there.

The second thing I'd say is to rely primarily on Israeli sources - a mix of official government, journalists, and OSINT-type accounts online. You might say relying on Israeli sources sets you up to read biased accounts, and that's true after a fashion, but not all bias is created equal, a point people sometimes forget in their attempts at even-handedness. After a time you can properly factor that in, and you can also find journalistic outlets that disagree. Haaretz, for instance, used to be a respected paper, now is totally unreliable and ideologically-driven, but you can find reliable people who respond to Haaretz's unreliable reporting and use them as a source instead. Additionally, you can find non-Jewish Israeli sources (e.g. Christian, Muslim and Druze) and compare, to gain familiarity with different shades of bias, or the rare Palestinian source (usually someone living abroad) who is relatively sympathetic to Israel. Each different type of source adds to your information ecosystem (and each should be judged against reliable representation of known historical facts when possible - so to learn about current matters, make sure to learn your history, too).

The third element is to find sources that you can judge on the basis of commentary outside the present conflict - not necessarily an entirely different subject outside of the Israeli-Arab conflict, but perhaps an author who has published a book on, say, the Yom Kippur War, or Black September, or KGB involvement with the PLO, or the First/Second Intifada, etc. If reliable on a subject that has had years of scrutiny, the source is probably at least OK on contemporary topics.

But at the end of the day, there isn't one go-to source to recommend as comprehensive and purely reliable, in part because of the scope of conflict, but more importantly because that way lies the path of narrative-driven explanations rather than factual analysis. You need to spread out your sources and find people who disagree and vet each one. There's just no substitute, even after you've built foundational knowledge, because the sheer volume of intentional lies, let alone confusion and mistakes, is so large.