The ads are controlled by a third party such as Google Ads, animebase doesn't control what you see, to a degree, you do. So, the ads, like Zatanna and Avani stated are targeted specifically to you via your usual search history, or other demographics like your age, gender, or region. You admitted you search
for porn, and you search for anime, manga, and comics. Ergo those two search patterns overlap and you get ads targeted toward your preferences which with those patterns becomes sexualized anime, or manga.
They're also probably more inherently weighted toward anime, manga, and comics from the getgo because we're on an anime forum and you increase the sexuality of it by searching for porn and such. No one cares if you watch hentai or not, and no one is accusing you of it either. They're just explaining why you're getting the ads you're getting.
It's the same reason that if you search up PC parts on Amazon or other sites you'll see similar products like headsets, controllers or games in your suggestions. More information about targeted ads can be found
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. The simple fixes for your problems are to as Avani pointed out cleaning your
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or like other users have suggested installing an adblocker. I have eight.