Portfolio subdomains

How can I get other websites under my agency's main domain?

If I didn't explain myself well, here's what I would like to do:

domain.ltd (Agency's site)
- domain.ltd/site1.ltd
- domain.ltd/site2.ltd
- domain.ltd/site3.ltd

Basically I would like to develop websites for my agency's portfolio without having to buy new domains.

is there a solution to do this?

something like this maybe??
https://www.wpbeginner.com/glossary/multisite/

tazarbm said:

something like this maybe??
https://www.wpbeginner.com/glossary/multisite/

Click to expand...

Yeahh, something similar. Thanks!