Ahh....I think I can help you.
Lets see...
So there are two aspects to getting your art noticed, and one of them is hidden. Its called socializing. People wont even know to look for you if they dont even know you exist. Socializing is arguably more powerful for getting your art noticed than the actual art itself. Cant help you there.
Lets see the other facet, the art itself. You dont want to make fanart huh? Well, that cuts basically all of your mainstream audience out. Lets look at the quality. Mmm, pretty mediocre but thats pretty normal and not a dealbreaker. The biggest issue is that you're drawing human figures and your fundamentals are low enough that they're distracting from what you're trying to show. Hows the presentation? Oouugh, bad. You can gild some shit in gold and have some people still like it. Work on your presentation. A lot.
So, I think that just about sums up why your art isnt getting any attention.
As for frontpages...well youll need to get better at drawing, theres no way around that. After that, its just a matter of participating in some events. If you dont want to go that way, then girl in pose is always being frontpaged.