Can someone help me 😔

Hello,
I have bought a Huawei Mate Pro 13.2 in China and came back to France for the summer before going back, however even tho I was able to change the Huawei store location , when I try to download a vpn or other app it doesn’t work can someone help me ? ( I already download Easy abroad which I don’t have a choice when I try to download YouTube but for exemple VPN are not supported )