Uneven extrusion

[MapDitto]

This is my first 3D printer and I am still quite new to everything. My problem here is that when I start printing projects, the filament is not coming out evenly. On the bottom left quadrant of the prints, the filament would be coming out perfectly fine, but when it starts going onto the other quadrants, it gets extremely thin. I posted a picture for better clarifications (Please excuse the destroyed tape, I've been messing with it a lot and did not want to keep changing it out.) I am not 100% sure that I am doing wrong, I assumed that it was the bed's height so I tried adjusting it but nothing seems to be working. Could you point me in the right direction?