Internet speed in my Ubuntu 20.04 is painfully slow

Hi I bought a new Dell Inspriron 5501 quite months back. Never really use it a lot. But still after installing Ubuntu 20.04 my internet is really slow. I only get download speed of 100KB/second whereas it should be 6-10MB/second(around 100Mb/s speed) when I tried google speedtest It shows 0.5Kb/sec speed for download and 22-30 Mb/s for upload. If I had the same download speed it would have been enough. Keeping my laptop all all day I did all updated and upgrades and have seen all articles and videos and did not help.
I’m writing this in my phone so for any info that I should include please tell me in the comments.