anyone notice their online casino stats don't match their actual records

so am i the only one who actually writes down every session result and then checks it against the stats on these casino sites? i swear my tracking says i’ve had a bigger swing, but their numbers look smoothed out. i’m not saying they’re cooking the books or whatever, but something is off. like for example, their “win/loss” is way different from what i have, and sometimes the time played is completely out of sync with reality.

also i think it’s weird how bonus wagers sometimes vanish from the log. maybe i’m just being paranoid, but it bugs me when the record-keeping doesn’t match up. would like to hear from anyone else who tracks their play as obsessively as me.