There are eBikes with Bosch eBike ABS with Magura brakes and with Tektro brakes. What is the difference or how do I know which variant is right for me?

The brakes are specified in advance by the eBike manufacturers. Depending on the intended use of the eBike, they select suitable brakes for it. The range of use extends from City eBikes to sporty eMTBs. There are suitable brakes for them, whose brake levers are specified for operation with one to three fingers. Your dealer will be happy to help you make the right choice.