i make separate copies of all of my important user data + custom system files;
game saves & custom config settings, application settings and projects, other user files, etc.
and then full OS & application system images.
these both are incrementally backed up every 2 weeks to a month depending on how much data may have been altered over time.
then i keep all of my media(audio, video, etc) backed up on a separate external drive(3TB)
and all of my installation packages, mods, etc on another separate drive(3TB).
then all of my backups are backed up again to a larger external drive(8TB).
Whats the best way to make backups today in this age?
there really is no "best" way.
many users still use Macrium and have consistently good results.
for many years i, and many others, have also used Acronis True Image(recently updated to
Cyber Protect Home i believe).
while others still claim they get along fine with basic Windows backup images.
look for choices between full system images, incremental backups, and possibly cloud storage if that suits you.
just make sure whichever you end up choosing would be a good option for your personal needs.