There are many nice libraries for the inexpensive Nokia 5110 display out there which are probably more feature-complete. The main advantage of this one is using neither a framebuffer nor the SPI ...
tinygo flash -target=arduino -port=/dev/ttyUSB0 . If everything goes OK, some progress bars should pop up and the process should end with a thankful message: avrdude: verifying ... avrdude: 7036 bytes ...