netherportal, boat and elytra glitch

Hi, so I've got a glitch where I go into the nether portal and I randomly spawn somewhere (without netherportal so I have to dig/fly all the way back). It happend 7 times to me (2times going to the overworld and 5times going to the nether) and its highly anoying cuz my X and Y coordinates are some times above 2k-5k blocks from our centre. It only happend in survival so far but its going on for a long time now. It happens in a single and multy player game (maybe this will help as well: I'm the owner of our survival world and it only happens to me). The 2nd glitch is the elytra glitch: when I fly and I hit any kind of ceiling to hard, when I walk again, I can jump through blocks ( just for a few seconds or sometimes minutes), thats just weird. My 3th glitch is when me or my friends (1of them has xbox 360, 1 has bedrock for PC and 2 other switch friends) enter a boat and we're going into a water elevator, with the bubbles from the soulsand u get kicked out wich is normal but when u want to enter them again u can't cuz u immediately teleport next to the boat (when it's already of the bubbles, so actually the boat things he's still on the bubbles) so u have te break them and replace them. Anyway, hope ya'll can fix this🙂.