The cryptocurrency market is too big and you can't affect it by spreading some news in this forum especially if you are not a know member.
To affect the market you have to be a well known person and have millions of followers.
Besides, there are many experts who are able to tell whether the news are true or false and certainly people will believe them.
Also while this forum is the most important when it comes to bitcoin and other cryptocurrencies not everyone has an account here there are many people that despite having big holdings they probably have never created an account in this forum, they read it from time to time but they do not feel the need to post so it will be impossible to reach them in a consistent way.