This is a bit ridiculous looking, but I'm a middle aged apple with good legs, a squishy middle and no hips, so my jeans were either painful round the middle or slipped down to look baggy. I wear long tops, so nobody needs to see my waist. I found normal belts uncomfy, bulky, restrictive and annoying to be buckling and unbuckling. This strong elastic belt clips to your jeans belt loops, making the waist more elastic and secure without a front buckle (though a round me front fastening is provided as an option). Sizing is generous and flexible. Thought I'd share it with you folks in case useful.
No Buckle Ladies Elastic Belt for Women Mens Invisible Jeans Pants Dress Stretch Waist Belt up to 64" by SUOSDEY amzn.eu/d/eySTwH9