Same problem I have. I posted the same questions on the Fiverr Forum but didn't get any satisfactory answers. The recent changes in the Fiverr algorithm will improve with the passage of time.
Instead of waiting for Fiverr briefs to receive, try to promote your gigs on social media platforms like Facebook, Twitter, Pinterest and Fiverr Box. It will help you in grabbing potential clients. You can also get clients with writing articles containing your gig links. Take the example of an article titled "the 12 best logo designers of 2023 on Fiverr" and publish the articles on blog. It will help in driving massive traffic to your profile.
Play around with your gigs, optimize them and write engaging descriptions that help people solve their issues.
Work smart, not hard.