My computer internet Got really slow but later it was now doing fine. is it caused by malware and pls help me check

So i just woke up, Got into my computer and do some things. But meanwhile, something happened, my internet suddenly become super slow LIKEEEE, super slow. it cant almost run anything and it was like 0.2 mbps download which is so slow. and then i honestly thought, is it a Virus? i mean as of today its okay now and pls tell me how to fix this issue and pls tell me if its a virus or malware or spyware or whatsoever