Is there someway to practice offline? I have bad internet and when I’m getting 150 or 200 ping I want to at least practice. The range and custom servers still make you lag for some reason.

I am a bronze Jett player and I think I am pretty good for my rank, I can push into site first and make space for my teammates to plant. However I am not that good at using the ult, I can kill most people fairly easily if they stay still bu...