Best Cast on for Rectangular Shawl

I’m fairly new to knitting and am starting a rectangular shawl. I started with a cast for shawls that I found on the internet but it seems too tight for the work. I hate to complete the shawl and find it pulling too tight at the start. What would be the best cast on to use?

Thanks for your help.

For socks I’ve used a german twisted cast on. That might work for a shawl. Just do any one you choose loosely. There’s a video here or your can search You Tube.

Thanks, Jan, for your help. I decided to try the german twisted.