well.. underage littles is sfw spaces is okay, right?

No. Be your own person. Have a SFW blog that reflects your interests as a human. Idc if you want to sit in your Disney Princess jammies and colour. Idc if you want to wear a onesie and watch cartoons all day. But stop trying to enter a community that is specifically for adults. Stop trying to get adults to accept you in spaces that weren’t created for you. Stop being snotty, entitled, little kids and just do as you’re told.