Being an Elder Scrolls fan is harder than being an astronaut I swear to all the Gods.

Well, there's a valid reason why there's only one trailer. GTA fans have been waiting for GTA VI for as long as - if not longer than - TES fans have been waiting for TESVI. Every time GTA VI was about to be released, something pushed development back. It's basically been a back-and-forth where a new complication comes up every time Rockstar thought they'd fixed everything. Rockstar only released one official trailer for GTA VI because - yes, they do plan on releasing it this year - but they don't wanna hype it up too much and jinx the release. If they get everyone all excited and then have to push it back again, everyone's gonna be pissed, and pissed players results in less traffic for their games. Rockstar has been floating on the commercial success of GTA V and RDR2 for years now. If everyone gets pissed about a(nother) delayed GTA VI release, then they might stop playing those other games, and Rockstar will lose money, and then we won't ever get GTA VI.

TES fans, meanwhile, are a bit more chill. As you demonstrate here, we're calmly waiting for TESVI. Unlike GTA VI, Bethesda hasn't teased and disappointed us with multiple near-releases followed by delays like Rockstar has, and Bethesda also has the other TES games. Everything after Arena (Daggerfall, Morrowind, Oblivion, Skyrim, and ESO) is still popular, meaning Bethesda is getting a steady supply of funding from the success of those games. Even if one falls off, the popularity of the others will definitely pick up the slack, meaning Bethesda has more leeway since it's not walking on glass shards with releasing and delaying TESVI like Rockstar is with GTA.