As a new member of a team or a new employee, you are certainly very keen on showing what a good choice they made employing you. Most of us take this as an opportunity to show what we can do, how loyal we are to our employer, and what we can achieve. Although you may not be someone who enjoys showing off, there are often ways you can communicate your professionalism to others through our behaviour, decisions and communication.
In many countries, employers reward employees who are high-achieving and competitive. Loyalty and a certain level of obedience are also considered good qualities in an employee. So it is not unlikely that these are things you are trying to convey, more or less consciously.
However, in a Swedish workplace these personal traits and behaviours are not necessarily seen as something positive. Swedes in general are not particularly impressed with excellence. Instead, there are other attributes and behaviour patterns that most Swedish employers favour.
You may not agree with this outlook and the priorities I will describe, and the positive impact of the Swedish work style is arguable, but it is important to recognise this, in case you are keen to make a good impression. There will be certain situations or instances where it is important for you to make the best impression possible.
Also, just because you may not like the Swedish style, you may not enjoy other systems either, but you may feel more comfortable in cultural contexts you are familiar with.