Can't put downloaded apps in my SD card I have a LG Tribute 5 with 8 Gigabytes of total memory. I had been getting the annoying box that says "Storage space running out". I bought an SD card and put all my pictures and music in it.

For some reason I am unable to move certain apps to my SD card. When I attempt to download apps from Google Play Store, it says "Not enough space" and gives me a list of apps to delete. Most of the apps on the list are in my SD card already. When I go to my settings and try to move all my downloaded apps to my SD card, a couple of them won't. For those couple apps, the option to "Move to SD card" is greyed out, signaling that moving to my SD card is not an option.

This is getting pretty annoying. Does anybody know what I can do to relieve this problem?
It's not always possible to move an app to an external SD Card via the
  Application Manager.


There is a feature, called Flex Storage, that allows you to use an external SD Card as Internal storage. This can be done from Settings > Storage > SD Card, depending to your phone model. Remember that usually this operation formats your SD, so make sure to make a backup first. 
By the way, this option is not supported from all devices.

Another way to achieve the result is using a third-party software like Link2SD that allows you to move the apllications to a special partition on your SD Card and use them as usual. Keep in mind that this operation requires Root Privileges on your phone.

There are plenty of guides on the internet about this procedure, by the way I suggest you to perform it only if you are sure, because an error while executing the procedure (especially when partitioning the SD) can lead to data loss.