Hi Julie and welcome! Unfortunately guidelines are quite tight for benzodiazepines now as people can get addicted to them quite quickly. Propranolol will help with the physical symptoms of anxiety and can give you space to deal with the mental symptoms. They can work really well, I was on them for years and they helped enormously.
The fact you're reaching out for help and support suggests there is strength to fight, sometime we just need a little propping up