There is a reg key to add that disables bing search.
What I fucking hate, is that I exclusively use the start menu to start apps I've installed, but typing in the name of an app doesn't show the installed app at all, just fucking ads. They literally took away the only functionality of the start menu unless I do a very intuitive method of reverting it.
If it opened on the default browser it would be several times less infuriating, but clicking on anything by mistake and then waiting for Edge to open with all the prompts because you never use it makes me furious