Well, there is NO reason to switch out of Fusion 360. Just change your license type. Apparently, you can keep all of your files and don’t have to move them.
This question was asked by someone in your situation back in 2018: “How do you retain all your settings/files/tool library etc when you migrate from a paid subscription to a hobbyist one?”
Answer: “Changing a license type will not have any effect on your data, there will be no need to migrate anything.”
Note: just make sure that you register for the personal use license with the same email and password to access your old files. If you use a new logon ID/password, you will not have access to those other files. Same thing when you are re-subscribing to the personal hobby license for the rest of us.
It also appears that as of October 2023 they have changed the “personal use” license to a 3 year length so, perhaps we will not need to ‘re-enroll’ every 12 months.
And, it used to be that you needed to wait until the 12 months had expired before the system would process your new subscription. Now they are allowing re-subscription within 20 days of expiring.
This page, published Nov 2023 by Autodesk goes into more detail:
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/How-to-renew-your-hobbyist-enthusiast-license-for-Fusion-360.html