I would try another file manager simply on principle. I used to use ES, then it started coming with unwanted "payloads" in the form of lock screen ads. I believe the app was purchased by Cheetah Mobile, one of the least-respected app developers in the Android world.
I moved to Solid Explorer and happily paid for the full version.
Additionally - are those apps not available in the Play Store? Where are you getting the APK from?