There is a cream from a brand called naydaya and it’s a scar saviour balm - I’ve not used it but looking to purchase & it’s got really good reviews x
You need to do deep massages. That will break up any scar tissue that is sticking in the deep layers of the skin! Start with circles every day and you can pinch the scar too
You can buy scar gels. It's got silicon in that you use and gently but firmly massage the scar area. It's meant to help the appearance and texture of the scar