Idea: Open an account @ IBKR (there are facilitating brokers all over Europe that feed into IBKR, such as Lynxbroker) - transfer some cash or shares there (make sure the shares are held in US$, as options on TSLA are traded in US). Then head over to the other thread to start learning about options... in the mean time, you can play around with this calculator a bit:
Long Call Calculator
Stay away from European warrants offered by European brokers. Warrants are not standardized, pricing is / can be arbitrary or intransparent, they are issued by the bank/broker --> carry issuer risk, very few trading strategies offered, only traded OTC, can't write warrants.....
Not advice...yadayadayada