ImproviseAdaptStillFail

Printer: Ultimaker 2 Extended+ Material: PLA (black) So Im still new to 3D printing. I watched alot of videos and read multiple guides on this website about warping and so on. I now wanted to print something more complicated for the first time. I found an articulated "snake" on thingiverse and tried my luck but I failed every try. I releveled the bed multiple times, tried using a glue stick, increased the bed and extruder temperature, fan speed from the span of 100% to 50% (first layer and overall), lowered the speed of the first layer and overall speed, changed the size of the print from a span of 100% to 60%, added brim with different amounts of lines. I honestly dont know much more of what I could do besides just going through each little setting and experiment with them. I would greatly appreciate any help / input on this since I really want to get more into 3d printing.