I recently bought myself a gravel bike, and I think I made a mistake with the size choice. I'm 178 centimeters tall, and I bought size L. I chose the bike for bikepacking trips. Please tell me, how badly did I mess up, and is there anything that can be done?

I already tried replacing the 80 mm stem with a 70 mm one with a 35-degree rise, but it's still uncomfortable.

If I move the saddle forward, my arms get tired; if I move it back, there's pressure on my crotch.

I don't know what to do. Bike was really expensive, and I am really upset.

https://www.welt-bikes.com/int/en/bikes/gravel/g100?srsltid=AfmBOoomWCwXCkpeF1BI4s7ouy8IFDwJIQXgkUoUts0BFH6O2xLu-IQ2