There are many scam apps on playstore and also scam extensions on chrome store. Sorry for being a victim and thanks for reporting this. If the developer of the app can be fetched out by Google, this will be great. Wish you the best in getting your funds back.
Now, I think I will always take all normal precautions before using any wallet app on playstore.
Like checking reviews of other users
Checking the developer info
Checking related apps and so on.
Yes youre right playstore has a lot of fake and scam apps , better to read first all the reviews and dont just donwload without reading the comments. If you find a fake app on google report them immediately.