Yep, you’ve got some warping, the longer and skinnier the print the more it wants to warp. Pla isn’t too bad for warping typically. For prevention, there’s a bunch you can do. Simplest is clean your print bed, rubbing alcohol or just dish soap and water have both worked well for me in the past. Getting a more adherent print bed like textured PEI or just layering it with something your print sticks better to like hairspray, painters tape or a layer of gluestick helps. Upping the bed temp can help, I think because you get less of a temperature differential between the plastic coming out of the nozzle and the first few layers so there’s less force pulling on it. You can also add a brim or less recommend a raft in the slicer.