There are a number of fediverse platforms that are more closely aligned with your values when it comes to online safety and control of your inbox. Be aware that not all of them are like Twitter. The Twitter interaction style itself promotes and encourages harassment and abuse by design; and this interaction style is baked into ActivityPub - the underlying protocol of the fediverse. It takes a lot of effort and thinking outside the box to provide relatively safe online spaces within the confines of said protocol. But people are doing it.
I work on a very small project known colloquially as "the streams repository" and I'm personally driven by online safety. I'm not saying my software is what you're looking for. It's way out in the fringes. However - if you take a good look at what's available and look at the trajectories and visions of some of the alternatives, you might just find a new home -- with a front door lock that actually works.
Cheers.
