My Wi-Fi keeps disconnecting all the time even though other devices at home work very well

Hi, my laptop wifi disconnects many times and I usually receive low internet speed whereas other devices in the same network work very well. It's just my laptop.

I receive errors like these: dns_probe_finished_nxdomain, dns_probe_finished_no_internet, err_network_changed and etc.

I use Chrome. I tried resetting browser several times, but no success yet. I have also tried flushing dns and resetting proxy settings. Please help me solve this problem. Your help highly appreciated.

Here are...

My Wi-Fi keeps disconnecting all the time even though other devices at home work very well