Welcome, and great introduction! I'm myself am considered an "older" Cuber with the age of 36. I'm using Roux mainly and main the WRM2021 MAGLEV. The cube is awesome for Roux die to light slice turns. I hope you'll enjoy your journey.
I also found out, that solving different puzzles makes me...
I got my first square-1 these days, making my collection almost WCA complete. 6x6 + 7x7 on the way. Seems my oldish (in Cuber years) brain still can learn 😅
I do cube around 15-20 minutes a day in average and started last year. Got new it helps a lot in getting down, relaxing and contemplating the day.
It actually also helps if something bothers me a lot to calm down. For me it has been a great pressure Ventil to be honest.
I'm pretty sure the export formats are different. Cubedesk has a cstimer import feature but not a cstimer export Format. Cstimer itself is basically stalled in development longer than cubedesk is around.
So You either need to convert the data yourself or start with new sessions I guess...
German pupils build a new solve robot that solves in under 400ms
https://www.salzburg24.at/news/salzburg/pinzgau/rubik-s-cube-solver-htl-schueler-aus-saalfelden-bauen-zauberwuerfel-roboter-116192098