I have 3 SIM cards. 2 in a dual-chip dumb phone and 1 in my company issued iPhone. I share one of my dumb SIM numbers to stores and people I deal with in the street. The second dumb SIM number I share with online stores or whoever needs to reach me when I am expecting an online purchase. Both have redirects to my real number that only my family knows. In my iPhone I have two do not disturb rules. One 24x7 that only allows incoming calls from family. Another 8x5 that allows incoming calls and notifications from teams and work directory. Everything else is routed from those two numbers (Street and Internet). Rarely I am annoyed by anyone. It’s very neat and not relying on virtual numbers or anything that breaks. It is a setup I’m using for 7 years with great success. And yeah, I ignore all SMS as they are usually always SPAM.