Ifl my bf will always prioritise his family over me

I (20F) have been with my bf (21M) for 2 years. We both still live with our respective families bc australia. He would not commit to me for 9 months prior to our relationship because he was worried about how his family would take it. He takes his family very seriously. Even still his dad will text him reminding him to come home early and such, but that is similar to my family. However it feels like he will take any opportunity to see them instead of me. If we have ore existing plans, he will drop them for plans with his family.

E.g. we had plans at the beginning of the year to see each other, but his family got into an argument and he "had" to take his little brother (M15) to go play pool to get him off his parents back. That one upset me quite a lot. When I talked to him about it, he thought I was blowing things out of proportion.

The other day, he said we would hang out on Monday. Sunday night approaches, and I ask what the plans are for tomorrow. He says he forgot it was a public holiday, so he will have to check with his family to see if they have plans together before seeing me.

This is something I have talked about with him before, but his reasoning is he never has any time to actually spend with his family. Granted, they live together and I only hang out with him for maybe half a day each week and we call for 30min each night. He will boil it down to poor planning on his part, but I still feel really insecure. For more context, he did not tell his parents that I existed until 4 months ago. Previously, he had even considered breaking up with me because he thought his parents would not be ok with us. It just feels like I will always come second to them and there's no other way for me to let him understand. What should I do?