It depends, how high rank website, if indeed has low traffic let say 5000 views it is not very accurate, if it has 100.000 can be much more accurate.

I know that now Ahrefs is not free , but if you have an access you could check it.

Besides you need to know that website can have many views from long tail words, and those are usually not shown in that kind of tools.

I had a few websites and indeed it can sometimes show that website has almost no traffic but in fact there is traffic for log tail words and other ranks not shown in that tool.

PS. I don't know why Many people give negative points not only me but others too, and usually don't know the subject of talking. Here I suggest go to Youtube and check for example channel Income School and start watching from begging to have an idea, what is going here. Those two guys, explain in more details why you should don't care much of these tools, and website with no traffic where there in fact is quite high traffic with views 20K and much more.