Seeking New Template Suggestion please

Hi There,

I need to put my website together. I used the instructions from below youtube video and had it all up and running until I upgraded my wordpress to latest version and it all got crashed.
https://www.youtube.com/watch?v=sd0grLQ4voU

I didn’t have any back up so I lost the whole site so I am back to square one!

So before I use the same instructions again to put the similar website, I wonder if experts in this forum know any better theme or template.

Website is for After School Activities so kind of educational classes for school students.

Appreciate your help.

Kind Regards