Update Entries from the site page

i need to edit entries by id in front the front of my site (not the admin menu).
(edit registers student)
i tired this code but i couldn`t make it work:
gravity view is not good for my needs
and the only things i find are out dated plugins.
how can edit (and repopulate) my entries ?

GravityView is the best product available for this application. I don’t know of a replacement. I would check with GravityView support if you find that their product is not meeting your needs for some reason.

Another good (and super simple) solution for editing entries on the frontend: