r/Borderlands

I’m new to the Borderlands franchise and i got borderlands 2 cuz i heard it’s the best one. To make this short, I basically like everything about the game : the soundtracks, the gameplay, the aesthetic. But i have a problem and it’s making this game unplayable for me. what tf is wrong with the save system?! I reached to the section right before the boss fight with Flynn and had to turn off my console and go out and I saw the game auto-save twice on my way to the point where i quit the game at. But when i got into the game again it started back at that small town

I just finished my second play through and want to gear up to level up to 69. If I want to use the armory, will the chest continue to scale after I accept the mission, or are they locked to that level? Can I accept each of the two missions required at 2 different levels(one now and one later)? If it is locked and I want to save that for level 69, what is the best loot farm for legendies/anarchys etc.? Thanks.

I have both games in my library and would like to play them with a friend, but we are i a steam family, so does my friend have to buy their own copy or goty and goty enhanced work together?