Unfortunately if your site gets big, you risk being taken down. Until it is small, nobody will care of messing with it.
For example, I created back in 2017 some WordPress plugins which recently got into legal trouble. One is publishing content to Facebook, for its naming, I used the letters FB together with the -omatic word ending in the plugin name (cannot write the full name, no promo intention here). Also, another plugin was for Instagram, named "Insta" with the word termination -matic.
In late 2021, I got contacted by Facebook attorneys to rename the plugins, or else...
I had to rename them and find some lame and unrelated names, as I was not allowed to use any of the trademarked words which are reserved by Facebook ( including FB, Face, Book, Insta, Gram and many more - full list here:
https://www.facebook.com/brand/resources/meta/our-trademarks/ ). Also, I had to change the icons of the plugins, as they contains a small icon of Facebook and Instagram logo. For example, I was not allowed to use the upper case F letter on a dark blue background. They also claim trademark of this...
So, yeah... you can name your site as you wish, but if you name it similar to names the big guys have, if you blip on their radar, they will surely take you down...