HeyNutsHawthorn Athletic Women's Essential High Waisted Sports Tights Yoga Pants 7/8 length Active Legging with Side Pockets-25''

i just bought these pants and they are already super stretched out, has this happened to anyone else?

It states that these have a seamless waistband but is there a smaller estlastic band also in the waistband?

If i wear size 2 in lulu, what size should i buy for these?

Are these better than colorfulkoala? I like that brand and I like leggings that are a little thicker and have good compression since I have a tummy.