Inconsistent internet speed

The first picture shows that my download speed is a lot slower than my download speed in the second picture. I didnt capture the time but they were both taken between 6:22pm-6:23pm. My internet recently has been very inconsistent and I think its because of my laptop not my internet provider but I can check if thats the problem.

My laptop doesnt have a ethernet port, but i have a usb-c to ethernet, adapter and a usb-c port. The adapter can go up to 1gbps and the cable can go up to 40gbps. This problem has only been happening recently and I want to know how to fix it.

edit: I just realized that I had my ethernet + wifi but the tests results dont change much.

  (Only ethernet)             On the bad tests I would get 300-470mbps  and the good tests 700-800 mbps per second for the download speed. For the upload speed         it always stays around the 800-900 mbps range. The latency on bad tests are usually the same around 23ms and the latency for the good speed is around 2ms.

For the bad tests the radial bar which shows my internet speed which you may know of from just searching up internet speed test and running the test, it would slowly go to the highest number for both the download speed and upload speeds. The bar would go up to 100 - 200 - 300 - 400 - 500 - 600 - 700 - 800 - 900. usually for the good tests like ALWAYS it would just jump instantly to the highest number (800-900)