Welcome to the game! On this forum we all need to speak English so it’s all in one language. Please use a translator for your posts.
The game is not designed to have multiple accounts, so if you switch between them you may lose unsaved progress. However, it does not break any rules so you can do it if you want to.
Awakening mythics costs lots of gems. Everyone can do it, but it takes time to earn enough gems. I calculated that we get roughly 8500 gems for free each year if we play everything. Awakening a mythic costs roughly 2000 gems (1200 in the anniversary). So you don’t have to pay to get mythics, but you need to play lots and be patient. For the first year you probably want to focus on building your collection rather than trying to awaken individual mythics. The most important thing is always saving enough gems for the fortune shrine. It comes roughly twice a month now (more than when I made the calculations in the linked post) and gives an average of 225 gems for free as long as you have 500 gems to use.
Anyway, glad to hear you love the game and I hope you stay to enjoy it 