Any advice??

Me and my grandparents live in the middle of no where and I do streaming on twich + just gaming in general, I'm having problems getting a good Wi-Fi signal in my room I live on the furthest end on our one story house and it just sucks I only get 2-3 bars on my PC and my phone cuts in and out most of the time. I need any ideas on getting a better connection in my room. Anything would help please🙏🙏