How to get rid of these weeds?

Hello community,

I’m a novice in lawn care and kind of overwhelmed with various issues in my lawn. One of the big one is these weeds which are spread all over my lawn. Can I get rid of these in some way or it is going to be a lost battle. I do have a service which comes and put some weed removers but there is no reduction. I’m based in Toronto area, Canada. Picture below