I am lacking in bum, not in tum - comfy trousers?

[drspouse]

I am currently living in my Gap Girlfriend jeans which I am dreading having to wash.
I have some Bam and some Hush joggers but owing to my lack of bum most trousers sag in the crotch and are then quite uncomfortable unless I pull them right up under my armpits! I'm only 5ft 3 so this doesn't help.
So basically most things are like harems and harems are ridiculous.
They then rub around the crotch.
Any better ideas of what I should be looking out for?
I would quite like to try a jersey jumpsuit (now that nobody can see me! I would normally avoid this totally owing to the fact that I'm early 50s and not very tall!) but I suspect they will also have the sagging crotch issue.
It's all very well going for trousers to avoid rubbing thighs but then they still rub...

Apparently I am an H shape and I shouldn't wear trousers...

I have this problem and am the height as you, I used to have a shapely bum not large, but an ok shape, but with age I am 59 I think it disappears, so its really hard to find trousers to suit, I won't wear anything baggy, with Jean's you just have try lots until you find a good fit, trousers I have some gap slim leg style they don't look to bad, and some zara pull on joggers type, the silky fabic kind, but always buy a smaller size so they look better on the bum.

Do you not find they are really uncomfortable on the waist if you size down?

If you have a big tummy have you thought about maternity trousers - lots don’t have huge tummy bits but are designed to stretch as you grow

I can size down if elastic waist as most pull on styles are, I don't have big tummy if that makes any difference, just slim hips and flat bottom.

I'm not sure it's THAT big brie, and it's not all at the front IYSWIM (I think I'm just a bit wide overall)