Check your ethernet cable.

Make sure you’re using at least Cat6, and less than 100 feet

https://cablesys.com/updates/cat6-cat6e-cat6a-differences/

Powwrline extender:

https://www.popularmechanics.com/technology/g35470087/top-powerline-adapters/?utm_source=google&utm_medium=cpc&utm_campaign=arb_ga_pop_m_bm_comm_lft_us_g35470087&gclid=Cj0KCQiA3uGqBhDdARIsAFeJ5r0kCt3JZZh_p9uiqBpfUJsIijsEDtfUAL0bG94J9zV4h6TGl8Inn5caAn_qEALw_wcB

Use your houses electrical wiring to route ethernet to where you need it