Google "TP-Link WIFI Booster" and find this gets lots of hits.
He is a review from CNET that favors TP-Link over others.
https://www.cnet.com/home/internet/best-wifi-extender/I have some TP-Link things and think such are good.
The WI-FI booster sits into a standard wall plug and hes two small antennas.
What I like most is the price. Under $15 for a used and conditioned unit.
It does the job.