you could turn an old router into a wireless bridge and solve your problem.
What Is a Wireless Bridge?
Turn Your Old Router Into a Wireless Bridge Using OpenWrt
Wireless bridge devices can be pretty expensive.
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Download OpenWrt Firmware
Take note that routers often have different versions using slightly different hardware.
check that to download the proper firmware of your router and its specific version.
Install OpenWrt on Your Router
OpenWrt supports thousands of devices from different manufacturers.
If your router is supported by OpenWrt, a guide will be provided on its website.
Tinkering with your gear’s bootloader may brick your router or put it into a bootloop.
This ensures that the software is properly installed and available when needed later.
You now have a wireless bridge.