I... I have a confession, guys... truth is... I hate isekai anime.
Even the ones people say are good. For three reasons.
Firstly, there's too many of them. Ever since Sword Art Online came out, approximately 600,000 of them were made and almost all of them are terrible wish-fulfillment harem anime thinly trying to disguise their identities behind the same video game adventure framework over and over again.
And they're all the same fantasy JRPG video game with the same basic game mechanics and main hero is always either an overpowered big sword boy or an overpowered mage boy, and the reason they especially are overpowered is because of their knowledge and ability to exploit the mechanics of the game world in a way an NPC couldn't, which always serves as the anime's main source of genre awareness and metatextuality.
Rinse and repeat until you've peeled the skin from your hands.
Secondly, the main characters of pretty much all of them fall into a trap that inhibits the quality of pretty much any kind of wish-fulfillment story: underdeveloped personality. It happens all the time; whenever someone wants to write a story, be it a book, film, video game or whatever, that's meant to allow the reader to insert themselves into a fantastical scene, the guy barely has a personality, other than vaguely defined, intrapersonal concepts such as "loyal" and "noble".
Relatability is important, but it's very hard to make a character interesting by keeping their character traits vague and refusing giving them a distinct, autonomous personality.
Thirdly, even though there have been multiple efforts to deconstruct, subvert, parody, and invert various recurring tropes within it to make their show unique, more often than not, the changes aren't significant enough to make me pay it attention because they always seem to think they have to adhere to a lot of them pedantically as some sort of prerequisite to even being considered an isekai story. Even the most unique new series tend to stick to the fantasy RPG genre with a lot of the same recurring mechanics.
All I'm saying is a Fallout isekai would be amazing and they're just leaving it on the table!
There were exactly two of them I liked.
The Vision of Escaflowne is one of the most well-aged and visually stunning anime ever made, and focused on depicting a beautiful world and a gripping story first. Now and Then, Here and There is one of the most beautifully bleak and harsh deconstructions of the isekai genre and I can't help but think it kind of put it to bed before it even started.
That... being... said...
The Rising of the Shield Hero is pretty good so far. Mostly because the main character has a personality. I'd recommend it. Also, the Promised Neverland.
If none of this made sense to you, it's because I'm falling asleep writing this.
Listening to: The Wind outside
Reading: The Amazing Spider-Man issues
Watching: Half in the Bag
Playing: Skyrim: Special Edition
Drinking: Diet Dr. Pepper