ACloudGuru.com has a good course and practice test available to help you score >90% found here.
ACloudGuru's course does not go in-depth enough for either of these exams I have found. I found the best, super in-depth training from a former Linux Academy instructor, Adrian Cantrill. ACloudGuru purchased Linux Academy in 2020, and unfortunately, most of their content was retired :( Adrian has started his own set of reasonably priced courses under his name, and they are here.