If my main domain has poor reputation, can I switch to a subdomain?

Subdomain as escape from root domain issues:

Partial isolation:

Subdomains have some independence

But may inherit some root domain signals

Not complete escape

Better than new domain because:

Maintains brand connection

Does not look like domain hopping

Easier to manage authentication

Approach:

Set up new subdomain with clean practices

Warm up the subdomain properly

May perform better than damaged root domain

Long-term:

If root domain recovers, subdomain benefits

If subdomain builds strong reputation, may help root

Better integrated solution than abandoning domain

Opening a new division while rehabilitating the main company.