A running newbie says hello

I think I've been running for almost 2 years now.
On weekdays, I use the treadmill, and on weekends, I roam around Anyangcheon Stream or local parks.
I don't have any experience participating in races.
My pace used to be in the mid-to-late 5-minute range per kilometer, but suddenly my records turned out like that.
Rather than my skills improving, it feels like Samsung Health has become more generous.
I can't even see the running course maps anymore...
I'm thinking of trying other apps, so what does everyone else use?