Please see the following link to read about how to set up couchdb using snap:

https://github.com/apache/couchdb-pkg/blob/main/README-SNAP.md

The essentials of setting up a basic couchdb are this:

First install using snap:

sudo snap install couchdb

Then set the admin password:

sudo snap set couchdb admin=yourpasswordhere

And start couchdb:

sudo snap start couchdb

Enable snap permissions:

sudo snap connect couchdb:mount-observe
sudo snap connect couchdb:process-control

Change the Erlang settings stored in the /var/snap/couchdb/current/etc/vm.args file:

sudo snap set couchdb name=douchdb@127.0.0.1:5984 setcookie=cutter

;make sure to read the vm.args file to further understand this.

;and also restart couchdb once this is done:

sudo snap restart couchdb

Monitor CouchDB;

snap logs couchdb -f
OR
journalctl -u snap.couchdb* -f