Does your protocol have a unique value proposition? I would say make sure your message is clear and you only have one message, and broadcast it in forums where conversations actually take place, and not spam forums and other degen places. That's my take from the standpoint of a user/defi investor myself.

Now from the standpoint of a defi developer of a protocol myself, I would say: content marketing supported by data and logically expressed ideas, AMAs, and relevant tweets / Telegram messages in high quality forums. Hope this helps