How to create new Modern List form

[jean090681]

How do i create a new form with modern experience on SharePoint List 

In one of my Modern SharePoint List newform.aspx went missing- not sure if someone deleted it and i not find in the recycle bin to restore. 

Hence I created a new form using SharePoint Designer 2013 and now the new form opens in the classic view/experience. However the  other two forms (edit form and display form ) opens in the modern view/experience.  

How do i switch the new form from classic view to modern experience

Should i use power-apps to create a new form ? or is there another easy way 

Please suggest, 

Thanks in advance.

[#2]

The way to customize list forms in modern is by means of PowerApps not by using SPD 2013. Try to revert the changes you have done so you can give a try to PowerApps