yes i also have the same issue . and many more people also have but not many notice it but is is there.

Samsung recently released october update for a52s. Did it fix the aod issue or not can u check?

yes Samsung plz fix this battery issue many people are experiencing this.  Release an update and address this issue plz. Standby time is also higher and battery  drains aggressively while watching YouTube. 

Samsung has removed payment services from their store and all the fonts on the store are paid so u can't download any fonts from the store but u can sideload them. Use the app "zFont".DOWNLOAD IT FROM THE PLAYSTORE. its free

u can't already not until you get one ui 3.1 update so you'll have to wait 2 or 3 months otherwise install a launcher from the play store.