Use a trolley such as this one instead of carrying grocery bags. Maybe not a good choice if you prefer lots of colour choices, but it does come in purple.
From Amazon
ROLSER I-Max MF 4 Wheel 2 Swivelling Foldable Shopping Trolley - More
ShopBetter24
Shopping cart Rolser I-MAX MF LOGIC Purple (43 L)
Shopaide
Shopping cart Rolser I-MAX MF LOGIC Purple (43 L)