Just make them yourself? You can do it with a DNS provider.
For example, if you are using Cloudflare and Replit, for your name put subdomain1.domain.extension and your target would be what Replit told you to put in the CNAME.
If you meant extensions (.com, .net) then you could try Freenom for FREE ones. You can also try using .is-a.dev which could be lu700.is-a.dev: https://github.com/is-a-dev/register
Hope this helps. If you want more information, reply to this comment with more specific requests.
Just make them yourself? You can do it with a DNS provider.
For example, if you are using Cloudflare and Replit, for your name put
subdomain1.domain.extensionand your target would be what Replit told you to put in the CNAME.If you meant extensions (
.com,.net) then you could try Freenom for FREE ones. You can also try using.is-a.devwhich could belu700.is-a.dev: https://github.com/is-a-dev/registerHope this helps. If you want more information, reply to this comment with more specific requests.