Is just like most of this exchange wallet we see in google play store most of those exchange app happens to be scam, most people after downloading such application they might decide to move some of their coin to the exchange app without knowing that is a fake application probably thier coin will be stocked inside the exchange wallet and that is final. That is why as a beginner is very good to ask questions, so as to know the right exchange wallet to use. However there are so many Ways to dictate fake website this are:
(1) you need to consider how you find the website in the first place.
(2) look for spelling grammar and formatting issues.
(3) use safe browsing tools or website checker.
This are few Ways in which you can dictate a fake website.
I would like to add some suggestions to complement some of the points you have explained, get used to accessing the official link to install the application or the best advice is to just use the official website to use an exchange account.
Additional advice, always be careful about storing coins on exchanges with a low reputation because some exchanges have closed without notice, my friend has lost a lot of shiba coins in his exchange wallet because the exchange site has closed.