Listen tcp 0.0.0.0:53: bind: address already in use

I am trying to setup Auto DNS but when I change HOST_PORT_BIND to 53 in my .env file, I can no longer start Devilbox without the following error:

$ docker-compose up httpd
Creating devilbox_bind_1 ... error

ERROR: for devilbox_bind_1  Cannot start service bind: driver failed programming external connectivity on endpoint devilbox_bind_1 
(28eee4fad723afd8f4d584c935897ee9eb85d53efaffe7043278f024dc2711b8): Error starting userland proxy: listen tcp 0.0.0.0:53: bind: address already in use

ERROR: for bind  Cannot start service bind: driver failed programming external connectivity on endpoint devilbox_bind_1 
(28eee4fad723afd8f4d584c935897ee9eb85d53efaffe7043278f024dc2711b8): Error starting userland proxy: listen tcp 0.0.0.0:53: bind: address already in use

When I change port 53 back to 1053, Devilbox works fine. I’m on Pop!_Os (Ubuntu) and am not experienced with network settings but I searched around on Google and found that I should look at what program might be listening on port 53. So I enter this command in terminal:

sudo fuser -v 53/tcp

And it shows:

53/tcp:              systemd-resolve    874 F.... systemd-resolve

Frankly, I don’t know how this helps. I could really use some suggestions on how to troubleshoot this further please?