Good morning from Italy!
I'm happy to see another PG&C thread about Spins
I'm personally studying/playing the format as you are, started from 1€ Spins and almost got to play the 2€ Spins, but unfortunately had two bad sessions where I lost around 20bi :/
I want to suggest you to dedicate some of those "poker hours" into working on your mindset. As you said, this game has crazy variance. This doesn't mean its not beatable because with little researches you'll find a lot of players living off Spins. But when we start tilting, spazing or whatever, we are just taking away every chance to make a profit in this format.
If you feel bad/tilt, just try to think that you are not playing 8h/day and before judging the results, you need a much bigger volume.
I will surely follow you in this journey and wish you all the best
See you around