I’m noticing a general misunderstanding about how the internet works. Many people (though perhaps not you, dear reader), think that apps like FB, Twitter and Instagram are equivalent to “the internet”. They are not. They are private, for-profit companies, and you agreed to terms of service with them. They are providing a service to you for free, funded by advertisers and investors, and responsible to the stock market, not to you.
There is still a free and open internet, but most web traffic today is produced by private apps and services, not by blogs and websites hosted on open-source software, as in the early days of the ‘net. If you want unmoderated, free and open information exchange, you can build a website using open-source software. But be aware that if you contract with a web hosting service to power it, that is also a private company, and they can set terms. Just as courts have said a baker can refuse to provide a cake to a couple they choose not to serve, you and your speech fall under that standard too. The sword cuts both ways.
You can speak freely under your own power, but not necessarily under the power of your preferred data center. If a tech company doesn’t want to power an adult site, or a conservative or a liberal site, that’s their choice. They set the terms of their service. And your favorite app is not the internet. You’ve just been trained to think so, by convenience and habit.