I'm exclusively an Android user and see if you can find the culprit this way: settings > battery > usage
My phones have this option for the battery that lists the usage of each app and percentage it has drained the battery since the last charge.
My latest Android is a Motorola purchased 2+ years ago and I was getting FOUR DAYS on a charge. Now it's down to 3 days (and only 2 days with a couple of hours of Zoom or Facebook LIVE meetings) but I know it's because I have a new app running continually in the background that I'm fine with the tradeoff.