My generic Smart TV won't install media players

Sorry cannot find the right forum since it does not deal with any known brand of TV. I'm in China and the TV is Chinese with no name to speak of. I managed to install some apps on it but can't seem to install a video player. I tried VLC and KM player. both seem to succeed in going through the process (accept this and that) and the bar shows it's installing but at the end it says, "Did not install". Does anyone have any indications as to why? or how to go around this problem? ( BTW I have no stick or other gadget on my TV nor intend to get one.)
P.S. One reason I want to install a Media player is to be able to control hues, contrast etc of my movies (not tv or streaming movies) since my TV seems to only have default auto settings which are just about useless.

 

Thank you all for your help. It is well appreciated. @Dennydet sorry but yes, media players do control hue, contrast etc. (VLC, GOG and others do). @ocnrze that may be true with most cases but not all. Remember that what is inside a Sony, Samsung etc are all parts made elsewhere (Aren't most screens made by Samsung)? @mikedt The reason why I did not buy a stick or other things (or why I bought a generic TV) is because I do not know how long I will stay here. No use spending money if I am going to leave after 6 months or a year and then have to give it away or sell for much cheaper. The T95 seems like a good idea if, and only if, the power is 120v-240v. I will look into it. (and if possible get an English remote ;-)
P.S. BTW my TV already has Chrome, YouTube, etc. but I do not use my TV for anything except view videos from a HD. I do not stream, do not use the browser etc. I may at some point perhaps stream sports matches; hockey, football (soccer), Olympics. Thanks again ye all