Repeater/Extender Basic

Hello,
I live in an RV out in an orchard and get my Internet from the main house which is just a bit too far away. On NetFlix especially the signal is terrible and I get drop outs.  Also, in browsing it is sometimes very very slow.  I will find out what brand and model the main house router is and post it later but my question is what should I buy and where should I buy it on line.  I see "extenders" that talk about wifi but not that savvy on this stuff.  Is the signal from an Internet Router called wifi?  Any help appreciated..

Thank You

I didn't find the right solution from the Internet.
References [url]https://www.cnet.com/forums/discussions/repeaterextender-basic-questions/[/url]


Example [url=http://blog.advids.co/20-brilliant-medical-devices-video-examples/]Medical Device Video[/url]