Ciould you give a brand and model number. I have an RTL88 TP Link USB WiFi working at about 40 Kbps, with thr special driver for it. My laqptop in the same spot has abiout 70 Mbps. I would like to buy a known working USB WiFi with whatever driver is needed.
Wifi has always been problematic for Linux. Google enough and you should find a driver for your hardware to compile. The newer the Linux version, the more likelihood it will work out of the box. I would try Debian Trixie but we don't have an ISO for it. But it should include v 2.9.4 when released in its repos
Someone here told me to get a now I cannot remember which chipset, but SMC Wireless USB 2.0 Adapter matched it on Amazon. I just plugged it in and now, instead of 24 Kbps, I have 15 Mbps. (My shop is several feet below the router. A refrigerator is also in the path.)