1) `Установка Flatpak:`
```
sudo apt update
sudo apt install flatpak -y
```
2) `Добавь Flathub (источник приложений):`
```
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
```
3) `Установи PortProton:`
```
flatpak install flathub ru.linux_gaming.PortProton -y
```
4) `Запуск PortProton через терминал:`
```
flatpak run ru.linux_gaming.PortProton
```