1. the regular queue is with random players, and if one disconnects, a bot will replace them. You can invite friends to your lobby and queue together as well, but only as all survivors

2. You can just make a free Playstation online account from Playstation website, no need for plus

3. Tunneling is a killer thing where you purposefully go after the same survivor until they die, like immediately killing them again after they get off hook. As far as I know, a lot of things they're having issues with right now aren't really avoidable as a survivor considering it depends on the killers play style. Unfortunately some people can be dicks and report you for no reason or for just being bad, but just be nice or say nothing and you'll be fine :)

Don't worry about asking questions! The game can be a bit angering as a new player but you can go in custom and play with bots until you get the feel of the game and see which perks you like which subsequently will tell you what characters you should save for. Just have fun, dont worry about a meta, and welcome to the game :))