Computer Hope

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. 

I have bought a few of these over the last few years to replace the built-in Wifi receiver on laptops a little too far away from my router. It made a HUGE difference and it's not a booster/repeater/extender so there is no loss in speeds. It's just a stronger receiver signal.

TP-Link USB WiFi Adapter for Desktop PC, AC1300Mbps USB 3.0 WiFi Dual Band Network Adapter


I also bought one of these to get the signal a little higher in the air and unobstructed.


4.7 Feet USB 3.0 Extension Cable with Pedestal Male to Female Data Transfer Cord