The question in your title is mostly answered by What can cause a question to be bumped? over on Meta.SE -- it's desired behavior on the part of Stack Exchange in order to get more questions answered by putting unanswered questions in front of visitors. I wasn't sure how effective that mechanism was on our site, so I dug around on SEDE and found this query: https://data.stackexchange.com/dba/query/634223/how-effective-are-community-bumps and threw a few sites at it. This is the output from that today:
||number of bumps
||voted after bumped
||answered after bumped
It seems to me, based on that query & data, that the bumping on U&L is among the most effective among those sites at getting questions answered & getting those answers voted on. I suspect there'd be some resistance to disabling the Community bump limits in the face of this.
Instead, I'd recommend changing your view into the site by going to one of these other links:
It sounds like the Questions view might be what you're expecting -- where it's simply the newest questions that have been asked, in order.
While I'm here, I'll mention a feature that I discovered recently: the Filter button on the Questions view; in particular, there's an option there to select questions that are tagged with "My watched tags"; from there, you can decide whether you want to include questions that don't have any answer or that don't have an accepted answer, etc. When questions are tagged appropriately, people then have an easier time finding questions they'd like to answer.