Just don't use plastic with food. Everything else lasts longer, is more durable in terms of not self-destructing or being ruined by contact with food or the act of cooking it, and you won't have as many microplastics in your life.

Yes, a significant source of microplastics in people's diets is from containers. Tupperware, sandwich ziplocks, the packaging it comes in. Buy, cook, and store stuff in glass, wood, metal, or paper, and you can nearly halve your microplastic intake.