Missing disney+ app and Max , and prime video and paramount+
Those apps should be available there:
https://channelstore.roku.com/pt-br/details/8f8e53a488990d6da45c79e914ed3785:33140619236ca42d45a9e4b4eecb5c41/disney-plus
https://channelstore.roku.com/pt-br/details/ca246a65e42aa58e8be603c79fcf52dd:5d74951391dfd2521b3c293946b62a6a/paramount-plus
https://channelstore.roku.com/pt-br/details/0d825fc70789327f8cdd959fa6ecdc9c:a9eda92fc03dac897660590f04969665/maxIf you can't add them from the above links, your Roku account is most likely not associated with Brazil. That can happen if you relocated to Brazil or if you were using a VPN or something that masks your true location when you set up your Roku account.
Unfortunately, the only way to fix it is to create a new Roku account ensuring that you're in Brazil and not using a VPN. After that you'll have to factory reset your Roku device to link it to the new account. When you create your new account, you should probably clear you browser cookies, use a different browser, or use a different device to ensure nothing saved by your browser can interfere with the process.
Maybe yes, I created that Roku account living in Cuba, thank you very much I hope to solve by creating a new account. And the model is : PTV43VA4R