@David-TP  Good morning, yes my phone is also in 2.4 but I have a question, the link that David send  said windows 10, and I'm on windows 11, inst that gonna be a problem?

Ensure that the PC is not too far away from the router. Walls and other obstacles can weaken the signal. Check the signal strength on your PC. You can do this by clicking on the Wi-Fi icon in the system tray and checking the signal strength. Make sure you have the latest drivers for your TL-WN881ND adapter. Visit the official TP-Link website and download the latest drivers for your specific operating system. Confirm that your router and the TL-WN881ND adapter both support the same wireless standards (e.g., 802.11ac, 802.11n). Ensure they are using the same frequency band (2.4GHz or 5GHz). 5GHz generally provides faster speeds but has a shorter range.