Dear @Faga0206,
Welcome back to the Wefugees Community and thank you for reaching out to us again.
If I understand correctly, you work in a qualified job as skilled worker now and your qualification was formally recognised by the authorities, right? This would be a condition for the 18a residence permit. For a full list of the requirements you may also see this website by the Berlin authorities.
According to this table by GGUA, applying for a residence permit according to 18a should be in general possible when holding one according to section 25 (3).
I recommend you to contact a migration counselling office for individual and more detailed advice. Together you can assess your situation and options.
In any case, please also don't hesitate to get back to us with any further questions.
All the best,
Meike