I know I am late with a response, but burry a cable if possible. Doesn't need to be too deep. Plug it in to your existing system and get a wireless access point. Very little if any configuration and it just works...

$35

https://www.amazon.com/Adoreen-Outdoor-Ethernet-Waterproof-Resistant/dp/B095Y4QVVK/ref=sr_1_2_sspa?crid=FPJH86QLNI7R&keywords=200%27%2Bcat%2B6%2Bcable&qid=1697761862&sprefix=200%27%2Bcat%2Caps%2C349&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1