Should I redo everything?

Traffic took a massive downpour last month from average 500 views to 100 and not even getting searched on google anymore. I have 145k unique views from october to march but now it's just depressing. I'm thinking of starting fresh and build around keywords that actually have clicks on them what do you think? + I have to also save a little money on hosting so have to cut that down too.

Don't keep building your site and traffic will come.
Check google algorithm updates and see if one caused a traffic drop for your site.

If you're still getting traffic, why not try to convert as much of your traffic to list members

This way, when you send updates, you can scale up your traffic as your list grows

You can also work on getting your existing members share your content with people they know

If you get low traffic, it doesn't have to be a death sentence