Putting your name on your work instead of hiding behind “we” is how you get credit and blame both. Take both.

Saying we is comfortable because it spreads the blame, and the same move spreads the credit straight out of your hands. You do not get one without the other. Claiming a piece of work means somebody can point at it when it is wrong, which is exactly what makes the praise worth something when it is right. People who take both usually get asked to do more.

In your next group thing, name which part was yours, in a normal voice, with no apology. Then own the mistakes in that part first, before anybody else gets to name them.