I love the HBP book but it's so frustrating

I am currently reading HBP and I am LOVING it. All the scenes of Harry and Dumbledore learning of Voldemort's history has me so focused it's unreal.

The rest, however, is genuinely infuriating. Harry finds evidence over evidence about Draco but it feels like no one is even giving him the benefit of the doubt! Not even Ron! And don't get me started on Hermione, she's so insufferable in this and I usually love her character! (I do appreciate that Arthur tried to listen to Harry but it also felt like he was ready to brush it under the rug as quickly as possible).

Mostly, I feel awful for Harry, it feels like he doesn't catch a break and I just WISH Dumbledore would've just TOLD Harry about why he trusts Snape- I know why he doesn't but then he gets angry when Harry doesn't understand and keeps distrusting Snape! He doesn't need to tell him everything but at least a little:

"I trust Prof. Snape because he was close friends with your mother and wouldn't try to hurt her son" (obvs oversimplifying).

It would help Harry trust Snape a SMIDGE, or at least gain a better understanding of why people are so willing to trust him, otherwise it just feels like Dumbledore is genuinely messing with the poor boy's head, especially after everything he went through.

Then there's the Ron-Hermione-Lavender love triangle that's just.....terrible to endure. I will admit that Ron did start it by being passive aggressive to Hermione because Ginny mentioned that Hermione and Krum kissed (which I am pretty sure they didn't anyway) after he and Hermione had a moment and it left her rather upset. But the way she acts about Ron and Lavender dating being....to attack Ron with canaries? Then mock Ron in class before sobbing when he dishes it back (Yes, Harry says they all laughed at Ron's mustache but he also mentioned that Hermione's laugh was specifically crueler). Then she goes back to ignoring Ron after Christmas holidays when Ron is trying to be friendly with her again and I understand Harry's plight and exhaustion- it really feels like he's a child going through a divorce.