My LG pad F 8.0 has glue problems.

Not sure what to do, my parent wouldnt let me take it anywhere to get it fixed so we were gonna fix it at home (i guess we being me, if i found out how) but Im not as good as she thought with technology repairs and I really just need to know how to get rid of the glue inside the screen. Its spreading into the screen and making weird smudges and shapes and I tried pushing it back by pressing on the screen (which was a bad idea, i think) It worked at first but then started to get worse and now it has some weird red dots on the screen. It is quite old but was working before this glue problem. I need to know the easiest way to fix this at home without having to do too much to the tablet because nobody in my house really knows how to handle stuff like this.