I know the submissions for this jam are supposed to be 'low quality' (and probably 'low effort' too), but if you want more submissions for this game jam, developers need to have a better incentive that will make them choose to spend their time making games for your jam over the many other jams out there.

The easiest way to do that is probably to give the games made here (and the jam itself) more exposure. You can try to get a bunch of small youtubers to play the games that are submitted to this jam. You can post a link to their channels here, under the condition that they agree to upload a few videos about the games that were submitted to this jam and mention the jam in their video.

It can be beneficial for everyone involved: the youtubers get ideas for new content and some exposure from the jam itself, the jam gets traffic and exposure from the youtubers, and the game devs get traffic and exposure from both the youtubers and the jam.

personally, i agree.