Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 1 no such table:
Unfortunately you've gone down the wrong path by deleting your existing site. Hopefully you have a backup you can restore from...

Drupal 8 isn't an update, it's a brand new system; you need to migrate your D7 site to it. 

The docs are here, they should contain everything you need