"Lucky try" & "Recommended" shortcuts always appear on homescreen, how to remove it? I am getting shortcuts in my home screen. I try to delete it, but it is appearing once again. Shortcuts names: Lucky try, Recommended.
Looks like a spammy app. Check the ones you've installed last before this trouble started:


From your home screen, go to the Android Settings › Apps
scroll the list to find above mentioned apps. For each app:


open its entry
scroll down to the end of the page opening, where you should find the permissions listed (which the app has requested)
check if the app has the permission to create shortcuts



Alternatively, use a Permission Checker – aSpotCat is a good candidate for this, CRAM App Analyser seems to be capable of the same: showing you all existing permissions, and on selecting one of them, all the apps requesting it.

 
aSpotCat and CRAM App Analyser (source: the resp. Playstore page; click images for larger variants)

The related permission goes by the name INSTALL_SHORTCUT, and most likely will be titled "Install Shortcuts" or something similar.

Once you found the possible culprit, get rid of it: uninstall the app (if multiple, only one a time) and see whether the issue goes away. If the whole racket ended, you've got the troublemaker eliminated – and in case you've uninstalled other apps before on this road, it should be safe to re-install those as they were most likely not causing the issue.