I feel really guilty killing insects, even though it isn’t a sin

As a catholic, recently I’ve been feeling very guilty and anxious. The reason being is that because, during the course of my life, I’ve probably taken the lives of so many insects unintentionally and I’m in so much guilt to the point that when I go for a walk in the grass or a drive it’s inevitable that a tiny insect will die because of me. I feel like it’s unavoidable and I’m feeling super guilty and anxious and afraid of going to hell for it. I know this may sound like a dumb or stupid post, but it’s been bothering as of late. Now I know that killing insects isn’t a sin in the bible, but it feel like a sin to me I was wondering how do you find peace with God that you’ve taken the lives of so many creatures accidentally during your life. How can I stop feeling guilty and live my life guilty free. Thank you and god bless.