MX PLAYER

[Vishal Jariwala]

NEED MX PLAYER

[Shotokan101]

If it is not available on the LG app store then it is not possible 

[Shotokan101]

1 hour ago, Dirlex said:

If it is not in the app store, then you can use analogs. For example, the VLC player is a good alternative.

No you can't - the ony apps that will work on webos are on the LG store

[Shotokan101]

13 minutes ago, Dirlex said:

You can look for solutions on the XDA forum

Not for Android App store apps as asked about here though