My adoptive parents doesn't want me to help my biological parents do you think its selfish of them to not want me to help my bio family?

My adoptive parents (my aunt and uncle) adopted me when I was 2 and when I was in college my uncle and aunt worked for my well off biological sister they were caretakers of my sisters house (because my sister married well off man) my sister also helps me sometimes with tuition at school and my parents are kinda giving me money sometimes for school fees now that I graduated and I have a job my uncle and aunt doesn't want me to help my own mother and my own siblings because they said they helped me to get where I am they should be my priority instead of my own bio family. They dont like me giving money to them. Like last time I said I'd like to renovate my own parents house they said " Why are you renovating their house you should be renovating our house?" And my aunt would always say to my siblings that" I will never help them because they didn't even help me in college that they should be the only people I should be helping because they helped me to get where I am" but thats not true cuz I want to help my bio family as well plus they hate sharing my blessings to them as well I see their faces they look mad. Im also thinking my bio moms birthday is incoming I would love to give her a gift. To be clear I helped my adoptive parents enough with money I helped to renovate their house on my uncles birthday I already gave him $180(7,000 pesos) I live in Asia third world thats big enough just for birthday gift. I don't know I also thought they are kinda selfish for not me helping other people or gifting my biological parents or siblings also my niece and nephew they seem mad when I do that. by the way are they selfish? Its my money now right I have right to spend who to spend where to spend my money now without asking approval of my aunt and uncle even though they raised me right?
My adoptive parents doesn't want me to help my biological parents do you think its selfish of them to not want me to help my bio family?
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