I wanna see the full gameplay of some good player playing, i always find some clip but never a full gameplay. I just want to learn the game but idk where to start the study, any help would be appreciated

I've tried playing astra a few times. When I was in silver I tried and it didn't work out, so I tried again in gold and I still struggle to play her. When I play astra, I just feel like I don't understand the game well enough to use her ab...