Advice to Make Your Story Flow Better

I’m currently revamping my first story and working on another one. I’m having a hard time making them flow correctly. Often the episodes end up being a bit choppy. For example, sometimes I feel like scenes seem out of place but they’re important for later on in the story. Also, I feel like it could because I don’t give back story right off the bat because I don’t want to give everything about my characters away in the first few episodes. What’s some advice you guys have to help improve the flow of my stories?