Hello:
I share your feelings regarding these platforms. I am the owner of several trademarks legally registered in my country. I have tried by all means to secure the username on X, Instagram, YouTube, TikTok among others without positive results. In fact, my requests comply with the terms and trademark policies of these platforms. It is very frustrating and fills me with helplessness that these platforms ignore these legal aspects, they only respond automatically and without legal foundations.
In my particular case, the usernames/handles I claim are inactive for years, with no posts.