Problem instal system in macbook pro with internet

[nitro3241]

i need help instal system in to macbook pro 2011year . Previously i have high sierra but i format disk and now my macbook want to instal osx lion 10.7 but when i instaling sytem i have fault"this thing is temporarily unavailable" how system i should instal in my macbook pro 13'. thank you

 

[Audit13]

If you have access to another Mac, you could create a usb high Sierra installer.

 

[BLUEDOG314]

If your computer was running high sierra, the boot rom will have been updated so that holding CMD+Option+R will automatically go to system recovery for the latest supported MacOS version. If you do Shift+CMD+Option+R you will get the original OS it shipped with or the oldest still available.