I think you're acting really childishly entitled. You aren't owed anyone's attention or participation. And throwing a tantrum on a public forum over feeling neglected is only going to make people avoid you. People have pointed out to you the things you need to fix, but instead of taking their criticisms and advice to heart, you're dragging other people into the spotlight to shame them and bemoaning how no one replies to you.

So here's your reply. Suck it up. Not everything is going to go your way all the time, and taking your anger and frustration out on other people is incredibly immature and toxic behavior. Would you want to RP with someone who is passive aggressive, whines about how no one pays attention to them, and publicly shames their past partners for not living up to their standards? I sure wouldn't, so you think long and hard about how your behavior on a public forum reflects on your character as a person.

As Peridot and others have said, the problem is you. Your RPs are very niche and aren't going to attract a lot of people who aren't interested in them. That's just a fact. You also take the main character/most powerful role available for yourself, leaving everyone else to merely occupy side roles created only to support you. That's not going to net you a lot of players or partners. Try to take the perspective of an outsider, looking at an RP where they'd be stuck in a lesser role. Not super interesting or motivating.

Your next problem is where you're placing your RPs. You keep putting them in Advanced/Casual when they should be in Free. You're going to get a lot more people interested in free, because free is where a lot more people float around and hang out. People in Advanced/Casual are looking for more fleshed out plots, worldbuilding, and more direction from the GM. Replies are also going to take a much longer time, because of the scale of how much different people write. Some people write replies ever week, some every three weeks. If you want faster replies, you're better off going to a Free section anyways, as that seems to be where your writing level is at.

Finally, just stop bumping and blaming the world whenever someone drops or you don't get the interest you want. You come off as bitter and hostile, and a lot of people are put off by the pressure of having someone constantly bump them. Stop blaming others and take some responsibility for your own actions. And do not @ your past partners as examples of how they've wronged you, because more people will avoid you in fear of becoming the next person you drag out to the stockades.