An anime that caters to my needs

Could any suggest me an anime on the following basis.

• want an anime with good fight scenes

• good plot

• MC should be someone overpowered and likable,not because he is the MC, but he should actually be smart and calculating

• bonus if we can actually see the MC becoming stronger, and not on Bullshit like fate or power of friendship or love, but watch him actually struggle

• bonus if its a fantasy world with magic and mana sciennce

• bonus if it has smthn to with secret government agencies

• i value anime with good animations and hence good fight scenes

• the anime has to be detailed and really explain the science behind things if its an fantasy world

• would prefer the following settings: game isekai, magic, fantasy, guilds, dungeons, adventure, explorations, strong MC, and preferbly not modern japan setting but more like western.

Anime for eg: Mushoku tensei, Demon slayer, solo levelling, deathnote, attack on titan, mob psycho, the assasin is already dead, sousou no frieren, cleavetess, hell's paradise, jujutsu kaisen, apothecary diaries, violet evergarden, avatar: the last airbender, chainsaw man, mob psycho 100, otherside picnic, the summer hikaru died, the rising of the shield hero, the saint's magic power is omnipotent, One punch man, Cyber punk, spy X family. Ssentenced to be a hero.

You're a true weeb if you read till here... :)