Condom problems😔

So I know everyone will say “I can stick my arm in one! Condoms ARE NOT too small!!” and that’s right, condom itself isn’t too small... the base of the condom is...

Whenever my fiancé and I try to use one (we have to now that I’m waiting for birth control after having my daughter) the condoms always fit too tight and kill his erection 😫😭

We’ve tried so many types! Even the “big” condoms are too tight on the base😰

Is there anywhere that sells some that are wider?? Or even a size chart would be appreciated 😅