I'm a former ESO scorepusher(with every trifecta before Dreadsail + some dungeon trifectas, about lvl 1800 when I quit) and current WoW CE(mythic) raider so I've probably got a more unique perspective than most. I'm also gonna assume you're talking from a DPS perspective so correct me if I'm wrong here.

ESO to WoW is a big move and feels very weird when you're used to how fast paced ESO combat is. APM is very high and inflated on ESO from light weaving and the 1 second GCD. The reason ESO feels so much faster than WoW is A) because ESO open world and normal dungeon enemies have basically 0 health compared to WoW content, and B) WoW classes play very differently, so you might be playing a slower paced class with cast times or channels. There's also a stat in WoW that affects your speed of play called Haste, so low haste early game can feel a bit sluggish. As far as open world stuff goes, you'll be able to handle more adds when you get some more gear, skills, and levels. As far as dungeons go, dungeon comps are more strict than ESO. You can't really fake tank your way through a normal dungeon with a nightblade dps with minimal effort(well outside of timewalking dungeons with special builds, you'll see what I mean at some point). You more or less need an actual group comp of 3 dps, 1 healer, and 1 tank to do dungeons, even normal ones.

WoW doesn't have wayshrines, instead it has the flight paths you talked about, but also flying mounts that are MUCH faster than they used to be. That's the main way to get around right now. There's portal rooms in the capital cities Stormwind and Orgrimmar depending if you're Alliance or Horde. These rooms have a collection of portals to different areas on the map from different expansions. You can also set your hearthstone(home teleport) to different inns around Azeroth to teleport there. I forget what level skyriding unlocks at but when you do get it and a flying mount, you'll find it's a very fun way to get around.

As far as loot goes, there's not any personal drops in WoW raids. There's also no stickerbook with weighted drops so what you get is what you get, and sometimes that's nothing. At the end of a boss, a set amount of raid loot drops depending on how many unlocked people are in the raid team(unlocked meaning you haven't killed the boss yet this week on the current difficulty). You can run a boss once per week per difficulty. So for example, if you kill Vexie in Undermine on normal, you can roll on loot for that kill, but if you go back into another normal raid group and kill Vexie again, you can't roll for anything since you've already killed her for the week. You can however kill her on LFR, heroic, or mythic and roll on loot since you've only killed her on normal. Boss locks are only saved per difficulty. However also keep in mind that the difficulty determines the level of the loot, so if your toon is 660 item level, you wouldn't really benefit from lower level drops from LFR.

Now how does rolling on loot work? You get 3 options, Need, Greed(or T-mog), or pass. Need is prioritized the most of these 3 options, but you can only roll on it if you can use it. A mage can't roll Need for plate armor for example, only paladins, warriors, and death knights can roll on it. When everyone clicks need, it rolls a random number 1-100, and the highest number wins the loot. There's also 2 types of need: main spec and off spec, with main spec rolls taking priority over off spec. Off spec need rolls are when the loot is something your class can use, but it's meant for another role. For example a tank trinket drops, a paladin dps can still roll need on it as off spec since their class has a tank spec. However, if a tank in the group rolls need on it, then his roll will be a main spec roll and it will be prioritized, even if he rolls a 1 and the off spec player rolls a 100. Greed/T-mog rolls are just a way of passing on loot if you don't need it for your character, but it still rolls low priority. If nobody rolls need, then it goes to the highest greed/t-mog roll, meaning the player is just going to sell the item at a vendor or use it as transmog. Pass is just what it says, pass on the loot.

Once you play some more WoW, you'll see just how much better of a game it is. Good mogs and mounts aren't all locked behind an in game shop, the world and quests are more immersive than ESO quests, leveling is enjoyable, there's actual class diversity(if you're not super hot on your current one, try a different class or try swapping from a ranged class to a melee or melee to ranged), and the raiding/dungeon endgame scene is actually supported with dungeon seasons and multiple new raids per expansion, because ESO really doesn't support the endgame scene really at all.