(Advice) Is trading 212 safe ?

Hello all, Im looking to invest 7000€ into several indexes for the next ~3y, id liek to buy shares (im not sure if thats how its called) from several Tech companies. like AVGO, NVDA, and so on. I dont want SP500 or other "big bundle" options. I googled and the 2 apps suggested to me were XTB or Trading 212. I live in Slovakia (EU). Looking for soemthign that very user friendly even for somewhat noobs in finance and investments. Ive used Kraken and Etoto before for crypto. Any advice would be muc