Should i contact an old friend after we lost contact when i was a bit rude? ( dont want to seem creepy)?

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this person im talking about was my friend for like 11 years and then i was kind of rude to her. After that we kind of lost contact, i found her instagram or i found her online.. but should i comment ? i dont know if she even likes me anymore. I found her because i still had her email in my contacts even tho we arent really friends anymore and its been like 2 or 3 years, so i used my contacts to find people i know on instagram and i just found her. I feel like if i do comment , she might think im weird... I just want to be back in touch and say sorry for being mean. omg sorry if this sounds creepy but i looked on her page and i found that we have some of the same interests if i mention it would it be creepy?. soo helppp? okay , so um i just found that she had an like tumblr ig page too that has like 1k followers. should i comment on that one instead? idk should i say like i just found her tumblr page? oh and also i was rude to her because i had this one friend that didnt like her and i was stupid so i listened to her and like ignored her thats why i was rude. so idk if she actually thought i was rude or not.