I feel like my friend is the reason I can't be social

I'm in year 12 right now and I joined a new school for sixth form. At the beginning of the year I made friends with another new girl and hung out with her a bit. She's very sweet but isn't popular with other people in our year. She can be quite socially unaware and doesn't seem to realise when people are laughing at her vs with her. And honestly I find her sense of humour quite embarrassing. To top things off she also has a pretty annoying and loud voice. But despite all these things she is very innocent and doesn't have a malicious bone in her body.
I first noticed issues in the beginning of the year when people would be talking she would go up to them to ask what they were talking about which often came across as quite nosy. After that I generally felt uncomfortable being with her around other people since sometimes people would make jabs at her and she wouldn't notice or she would say something embarrassing and I would get weird looks with her. As a result I started avoiding being around other people in her company. This has led to other people constantly associating me with her and we have become quite socially isolated from the rest of the school. If I genuinely got along with her this would be fine but we are quite different in a lot of ways and I don't think we are very compatible as friends. The problem is I struggle to talk to other people in our year since they all associate me with her. But unfortunately she is in 2 out of 3 of my classes and always sits next to me. This means we are often paired up for tasks and I don't get to interact with many other people.
I just want the opportunity to make different friends without constantly getting second hand embarrassment from her. I don't want to hurt her either though since she doesn't do any of these things intentionally. Any advice?

I'm in year 12 right now and I joined a new school for sixth form. At the beginning of the year I made friends with another new girl and hung out with her a bit. She's very sweet but isn't popular with other people in our year. She can be quite socially unaware and doesn't seem to realise when people are laughing at her vs with her. And honestly I find her sense of humour quite embarrassing. To top things off she also has a pretty annoying and loud voice. But despite all these things she is very innocent and doesn't have a malicious bone in her body.
I first noticed issues in the beginning of the year when people would be talking she would go up to them to ask what they were talking about which often came across as quite nosy. After that I generally felt uncomfortable being with her around other people since sometimes people would make jabs at her and she wouldn't notice or she would say something embarrassing and I would get weird looks with her. As a result I started avoiding being around other people in her company. This has led to other people constantly associating me with her and we have become quite socially isolated from the rest of the school. If I genuinely got along with her this would be fine but we are quite different in a lot of ways and I don't think we are very compatible as friends. The problem is I struggle to talk to other people in our year since they all associate me with her. But unfortunately she is in 2 out of 3 of my classes and always sits next to me. This means we are often paired up for tasks and I don't get to interact with many other people.
I just want the opportunity to make different friends without constantly getting second hand embarrassment from her. I don't want to hurt her either though since she doesn't do any of these things intentionally. Any advice?

There are always different types of people in each friendship group. I don't think people are going to think you're exactly like her.

rather than thinking i'm exactly like her they constantly associate me with her. If i'm alone somewhere people start asking where she is or get our names mixed up.