Sigh out of curiosity .. I went back to see those threads ... with only a few ... started not that hard.
Interesting I saw that your parents/guardians "advised" no training until the dog was 12 to 13 months old??? LOL ... "Good Luck" with that! That would be a "Green Dog" a dog with no formal obedience training ... don't want to "quash" his development as it were. That seems to be the way to go for "Serious Working Dogs" ... for a "family pet" however ... not so much.
Still "despite" that uh "advise" it seems that you went out and found "someone" that at least "labeled" themselves as a dog trainer??? Without casting aspersions ... I will say ... I am not impressed! Right "now" your actually "paying" someone that is "actively" help, to direct your seriously out of control dog on his way to the local "Rescue!"
I don't know ... maybe you have a really cool dog and there plan is to offer to "take him off your hands" when you get tired of having the crap bitten out of you??? "Apparently" ... your young so you don't pre assign motives to people?? But yeah I'm older and signical, so I do. But hey ... I don't know ... but I do know that whoever you are working with ... is "incompetent!"
It does not take "years" of experience to deal with "crap like this," but it does take some basics "tenants." One of them would ... that there will be "Consequences for a dog making poor choices."
I don't console "ignoring" behaviours I "console" addressing them! If you do "that" dog ... there will be "consequences!" (I will help you "dog" to) figure it out and "Make Better Choices!!"
Ultimately you will need the whole "No Free roaming in the house" Place and Sit on the Dog" thing that is the "goal" if you want the dog to be indoors. But right now ... you have a couple of simple issues and you can't "apparently" use a leash with a proper conventional "tool" correctly "to stop this crap???"
No problem ... you have made the "first" and most important step in rectifying this situation ... "out think your dog!" So back to basics ... I think ... if your are "willing" you can turn the issues around in this "post" in 24 hours???
The proper "leash corrections" thing is gonna be a "issue" but technology is your friend. You may already have the tool you need for the jumping thing?? See here ... :
And the dog charging out out of the "Crate" and biting the crap out of you ... well the PC is the "Consequence" for that choice ... but back to basics ... if the dog wants to bolt?? Then you "slam the door closed in his face!" Repeat as necessary, when he actually "Sits" and Waits" first ... then he gets to come out and if he does try and bite you use the "PC!" He will ... quickly figure it out!
But ... as they say "Pictures" are worth a thousands word ... which I am want to do (a thousands words.) But ... instead I will post this clip.: