I don't know your printer, but it looks like it still needs calibrating steps, and maybe correcting slack and tolerances. You may need to find manuals and tutorials on that for your printer, or ask the manufacturer.
After that, for finding the best settings for general printing: just stay with the printer and watch it closely, while printing small test models. Do lots of test models, one by one. Change speed on the fly, and see how that affects the print quality. Change temperature on the fly, and see what happens. Change cooling on the fly, change flow-rate, etc... Print the same