Hey OpenAI can we please get an option to delete old chats so we can have more space please?

I can't believe we can't even delete our own old chats, and also we can't have unlimited length of new chats. If I want to write a long ass story I can't bc I would either run out of space or run out of space not to mention the fact they won't let us use our own custom models. I can do all of this on other chatgpt platforms, so it would be nice to do the same in openai, bc some of those other platforms are really buggy and slow.