All u need to do is push the "stuff" down so it's like horizontal and underneath if u get what I mean. No tape tucking required! U will get used to the feeling of this kind of "tucking" with time, and honestly at this point I feel uncomfortable when I'm not tucked down there.
I have a bit of a personal question, so PLEASE feel free to not answer:
Are you on hrt? I have been having a lot of dysphoria surrounding my bulge day-to-day (not out, still boy mode unless I'm in my section of the house) and some of the underwear I've tried are either meant for "showers" that can tuck fully underneath without fear of shrinkage, or smaller ladies/people on hrt who are small enough to "push in" if you will.
I'm a grower, not on hrt (yet) and almost nothing short of taping has worked more than about half an hour, except a single pair of panties I have that's a little too small in the legs for my thighs. And taping every day is not only expensive but probably also not healthy for everything. Tape keeps it all smooth and in place. The underwear leaves enough space that the girls shift around and cause a bulge to appear and I can not only feel it but I can see it every time I step even if nobody else notices.
So I've been on the lookout for something to help me out there.