Default temp is 260. Its to low. How set other temp?
You can edit the properties of the generic filament (like temperature, flow ratio etc) and save it with a different name.
What slicer are you using?
CrealityPrint.
But I don’t find where I can change initial filament load temperature and speed when print starts.
You can click on the creality logo located on the top left corner of the application window, then Tool → Manage filaments
A new window will appear. Select the filament you want from the left side of it and go to the Print Temperature section to edit the temperatures you want. Then click Save and rename it as you wish