Pls Help me and my Minecraft Survival world

I think my thing lagged and didn't work so here we go again: I use bedrock edition and I play in my Normal difficulty survival world with 1 friend and my useless brother, and as of right now, I'm in the middle of the nether fortress, with too much problems.

1: My base is a village, it looks like crap, no villagers, most of it is destroyed, and everything is just sad. I don't want to move from it though because it has a nether portal that brings me to a nether portal I built in the fortress.

2: As I mentioned in problem 1, my village portal leads to the fortress. But when I try to go back in that same portal, it always manages to put me in a random Deepslate cave. And guess what? I managed to get a creeper to destroy the nether portal in the cave, and a new one spawned tight next to the broken portal!!

3: The first time I went to the nether, I spawned in nowhere. I had to climb up using a ladder. Everything was swell, you climbed up the ladder, you'd go along my beautiful andesite path to the nether fortress and get there! However, I forget how, but later in the game, that portal got destroyed. (I think a creeper went through the portal) And another portal spawned right next to it. However, that got destroyed too. When that got destroyed by a ghast, another one decided to spawn on top!!! And one spawned in a inconveniently open spot that I had to risk my diamond pickaxe just to break that portal. Now you know I built a portal in the fortress, but now that area is an obsidian wasteland. (There's a literal 3 stack portal!!)

4. I got nether warts but then again the stupid nether portal brings me to the middle of nowhere so I lose them all, and I really need to brew potions!!

5. I need more resources. I'm way too lazy on that though.

6. When I happen to portal into the cave, about 500 zombies 500 skeletons and 5000 creepers go through the portal. And when I come back I get a lovely surprise.