It sounds like you're facing people who don't have a good sense of boundaries. They are definitely overstepping into abusive, degrading, stressful and depressing behaviour (like with your tutor) or behaviour that does not allow for privacy, personal space and free time to yourself (like with your mum). You're entitled to have safe and free spaces of your own.
Setting boundaries can definitely be challenging in some cases. For example, if we're young and are conditioned to not talk back to adults or do as we're told without question, it can be hard to recondition our mind out of such things in some cases. It can be challenging to begin talking back, in regard to how we're feeling, and it can be hard to begin questioning (out loud) a lot of highly questionable behaviours. Sometimes it pays to find people who can help us come up ideas for setting boundaries, while also supporting us in our boundary setting.
Setting boundaries for other people to not cross will sometimes depend a lot on their nature. For example, if you had a tutor who was caring and wasn't conscious of the mental harm they were inflicting on you, you might say 'Sometimes when you speak to me like that I find it hard to focus on the work because I'm more focused on the upset I feel'. They might apologise while reassuring you they'll stop that behaviour and no longer overstep. On the other hand, having a tutor who consciously assaults you mentally and physically, that may sound more like 'If you insist on assaulting me mentally and physically, I'm no longer going to interact with you'. They'll either stop the behaviour or find someone else to assault while no longer tutoring you. The goal is to find a tutor who won't assault you, one of your basic boundaries and rights. An alternative would be to say to your parents 'Find me a tutor who won't assault me and I'll continue learning'. It's your parents you're setting a boundary with in this case, with the tutoring lessons. If they were to respond with something along the lines of 'No, you'll continue with the tutoring we're paying for', it would pay to rebel against being continuously assaulted. You have every right to not be mentally and physically harmed, a boundary that can be set for the rest of your life.
Setting boundaries can come with confidence. The more we practice the more confidence we gain. As I say, it can be hard to begin practicing but eventually practice makes perfect. We become really good at it. In order to become good at it, we have to start somewhere. Btw, setting boundaries can gain you the label of 'difficult' but it's a label to be worn with pride in some cases. I'd rather be difficult than be assaulted or lose my right to privacy. You've got this, you can do it.😊
