Why can't I see use Apple Fitness + in my Mac?

I used to have an iPad for personal use. Now I had to give it away to a family member and I haven't been able to buy a new iPad for myself. Now I want to use my Apple Fitness subscription and it's very uncomfortable to use it on my iPhone with such a tiny screen. I wish I could use my MacBook Pro with this service, just like Apple Arcade, Apple iCloud, Apple Music, Apple News... It's literally just this service that it's left outside the possibility to use it on my Mac. Please create a fitness app for Mac or a way to mirror the videos to your Mac without problems.