The end links on these bracelets were not designed to be removed. It can be done, but it is not easy & often results in damage to adjoining links.
I have removed links from 2 rivet bracelets, but both ended up with misshapen links. So, to reduce the likelihood of damage, I would recommend taking the bracelet to a watchmaker or jeweler who has the appropriate skill & tools. If they have the correct replacement rivets, drilling out the exiting rivets is always the best way to go &, if done correctly, does not result in visible damage to the bracelet.