Again, this would be the Legislative branch. Your right to vote has not decreased, and you can absolutely contact your senator to introduce a bill for what you stated. I mean, you have a representative. Absolutely use them if you dislike something.
However, disagreeing with the Legislative or Executive branch in no way erodes your democratic rights.
Well, your democratic right would be to vote. However, as you said we are in a democratic republic where we don’t vote to make the laws but rather vote for representatives.
However, disagreeing with the Legislative or Executive branch in no way erodes your democratic rights.