Loose gas tank neck?

Okay, so I haven't found a loose connection at the top but I did find at the bottom where it connects to the tank in that section of hose there's a rip in it about an inch long and the hose is coming loose from it can that be the cause of it all and can I only buy that section of hose to replace or the entire thing if I can what do I look for name and size that is if you look at the 1st pic you sent its the hose that's at the bottom.

I will load up a video or pic shortly so you can tell me whether or not I can just get the end piece of tube or not and the name hopefully.

So, this last part of hose can I just replace that section if so, is it difficult to do or easier to change the entire line and what is that process if so.

Okay, so, do you think this rip and the connection to the tank is why the filler hole is moving because I checked the brackets frin there to the tank and none are loose.

I can already see all of it that's how I found the rip in it and that the clamps were not on it at either end of the hose that's at the bottom of the filler neck and goes onto what I'm guessing's the tank.

Which is where the rips at?

I don't think we are understanding each other. I got underneath of it and I pulled the inner fender liner off and I can follow it from the top of it down to the tank which is where there's a small rubber hose that's supposed to be clamped at the base of the fuel filler line and again at the opening of the tank and that's where the rip is at I don't need to remove the tank in order to get to any part of the fuel neck line or hose.

Okay, I can get to the hose at the tank and without removing it, it's at the very bottom of the fuel filler neck line where its clamped onto the mouth of the tank this is where the hose has a rip in it about 1/2-1in long I can see both clamps the one holding the hose to the tank and the other to the fuel filler neck but they are not tightened at the tank what I'm asking is would it be easier to just change the section of hose verses the entire thing and when trying to find the entire part I'm only finding the neck without this hose and when I can find the hose idk if any are the right size and last thing is could this hose issue be why I can't get it to take gas and why the neck opening is loose and how, what and where do I start the repair process on any of it?

No where you put the gas pump in to get gas is loose and at the very bottom of that fuel filler line is a rubber hose that's clamped onto it and the other end connects to the tank by a clamp. That's where the rip is at in the hose. I showed you the pic of.

I apologize for how long it has been, but I've been doing research, and I've found that this is a common thing with my truck but none of the suggestions mentioned that I've been able to try have panned out. I replaced the hose I mentioned and found another hose that's deteriorating that I cannot find the name for I'm going to hack it up again and send a video to see if you can I believe it comes off the charcoal canister to the fuel line idk how to use compressed air to push the lines as suggested in my search for answers. So, if you can explain it that will be great.