I did the same in 2014 and lost touch with lots of friends. I am now in touch with a very few via Signal and email or phone. But I couldn't convert many to use

I did the same in 2014 and lost touch with lots of friends. I am now in touch with a very few via Signal and email or phone. But I couldn't convert many to use Signal, even though they I got them to try it with a lot of effort.