Varicose vein prevention??

Hello. I looked into varicose veins and found that visible tiny blood vessels and bulging are also symptoms..?! That's meㅠㅠ The legs where injections are easy..ㅠㅠ I didn't think it was a big problem, so I left it untreated, but now I'm suddenly very worried.. It seems like blood circulation isn't good eitherㅠㅠ I do walking exercises regularly.. Could you possibly share some preventive measures?