Can I format APFS drive into OS X Journaled without any data loss?

Can I format APFS drive into OS X Journaled without any data loss?

https://preview.redd.it/mjytmx0yhlld1.png?width=2560&format=png&auto=webp&s=12eb33bb635a1d573390ab57746bf8784c560c45

So i decided to use Open Core Legacy Patcher to install Monterey on my Mid 2011 iMac, but google didnt want to work, so i decided to revert back to High Sierra via a time machine backup. However, when i boot up i get a message from disk utility saying this disk is unsupported with this version of mac. can i convert the disk from apfs to os x journaled without data loss, or do i have to reset everything to format the drive?

thanks

submitted by /u/Wolfilicous
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