Advice for gardeners

This dialogue was really difficult for me, /z/ was really complicated. I think I managed in some words to pronounce it quite natural but in some others I couldn't, they still sound weird to me like "conditions" or "ones". Regarding some other aspects, I think I could manage to produce /z/ in the word "freezing" and also control my kit and fleece sounds. However, in the word "conditions" I think aspiration wasn't good because I was really concentrated on the /z/ sound coming. Hope you can give me feedback in this dialogue to help me improve this sound, bye!