How to communicate with android users by texting?
sending messages to contacts on android phones:
Why can’t my iphone11 communicate with android users by texting?……
iPhone 11, iOS 13
Keeping in mind that SMS use cellular data, if you activated your SMS app, and if your cellular plan can accept SMS send/receive, you should be able to do it.
See also this support article:--> If you can't send or receive messages on your iPhone, iPad, or iPod touch - Apple Support
Regards
Giulio