unintentionally looking at haram

asalam alaykum. i am on the internet a lot (watching halal things) but sometimes a haram clip or ad might show up in the video or on a website and as soon as i realize it is there i look away from it since i don't want to do a sin. but i feel guilty as if i did something wrong even though i didn't, i am always getting waswasah that you did haram even though it was unintentional. please someone help me how do i get rid of these waswasah that are telling me that i did haram even though it was a mistake.