What I did:
I did my exam on December 30, 2020 at a test centre.
I studied for 45 days. Read the Rita and PMBOK once then did the quizzes at the end of each Rita chapter. I scored about 60% -70% but moreso on the 60% side in most of these, After this, I re-read the Rita chapters and some of the corresponding chapters in the PMBOK if I felt that I got too low on the quiz.
I did Oliver Lehman's 100 MCQs and scored 68%. I do not feel that his questions are reflective of the exam at all and recommend that you can skip this but it did give me confidence when I heard that this was a good score via the internet. But not necessary.
Then I moved onto PM PrepCast full 4 hour exams which I found most alike the real PMP exam (even moreso that the PMI's PMP free exam). I scored 70%, 75.5%, 79% and 75.5% in the PM PrepCast exams 1 through 4. I also did learning quizzes after doing these full length exams because I was startied to get exhausted and getting diminishing returns from studying and doing such long exam mocks. I failed a few but I was not putting in as much thought as I was in the full exams so won't even mention those exact results (they were between 50%-80% about 10-20 at a time)
I then did PMI PMP free exam and got 68.5% which is a fail on PMI's website but those questions seemed outdated but they were helpful in helping see how PMI wants you to answer so I would recommend to still do them.
Good luck guys!