Why hasn't there been a Godzilla anime?

I've actually thought this when i was younger and I've been able to come up with 2 possible reasons. Now I don't watch anime very often, i've only seen the 1s that have gotten popular in the US and a few that got licensed and put on youtube so this may be an incorrect, uneducated view. I think the main reason is the storyline. Most animes that I've seen and from what i understand is a very common anime concept is random guy finds something powerful gets thrown into a world that he's not used to and is forced to be a part of it because of the power, info, ect that he gained in usually the first episode, and this wouldn't really work with a godzilla story, unless they catered widely to a younger audience and had godzilla befriend said main character. So i think a story for godzilla would be very difficult to come up with from an anime standpoint unless they were just going for the monster of the week plot in which case the american godzilla did that very well. The second reason i could come up with is that toho would have to license godzilla to an anime company and either let the company come up with it's own story and possibly misuse the character, or pay the company a lot to basically make a 20 episode anime rehash of the movies that have come out which would somewhat be a waste of money as i'm sure godzilla movies are much easier to come by over there than in the US and other countries. Those are the main reasons I could come up with, besides toho just only wanting godzilla be be in movies for the time being.

That's actually a good point. Like I said, I haven't really gotten into anime, but it just confused me as to why that never happened. However, I don't think they necessarily need to make the main character befriend Godzilla. It can be something like the main character trying to survive an encounter with Godzilla. Not like an anime series, but maybe a movie (Like Spirited Away). But I do see where you're coming from with the having to pay tons of money to license Godzilla and to keep it from being misused.

here's my Godzilla anime the monsters are running wild and the world builds jet jaguar and super mechagodzilla to combat this threat the story centers around a super mutant like from Godzilla final wars who pilots the machines

I remember this question being brought up a lot during the late 90s and early 2000s. The reason I remember at the time was that Toho felt Godzilla was too big for the small screen. They also probably did not want to compete with Ultraman which was extremely popular at the time and pretty much eclipsing Godzilla's popularity.

Then the question was asked, "Why not an anime movie?" Well at the time the Millennium series was underway, so Toho probably didn't want to spend resources on a Godzilla anime that would compete with the live action version of the character.

It didn't matter either way though since the Millennium series was mostly considered a boxoffice failure. And with Godzilla and other tokusatsu dead/dying in Japan today I doubt they'd want to try an anime now.

The fact is, at this point, Toho would rather have someone else do the work for them and make money off the character, ala, Legendary Pictures.