deleted every thing from phone (system and recovery) from twrp how to make phone work again

[AC Question]

Hi I was installing a room so i have installed twrp and accedently i have selected all check boxes at the time of recover that has deleted system and recovery . My phone cant boot it remains on mi logo . it is not detectable by usb , and volume + powe key is not working it just restarts the phone and again mi logo comes up. what should i do now make my phone work again.

 

[belodion]

What phone?

 

[Rukbat]

And can you get it to boot into download mode?