For your PETG trials, few things to know: it likes to bond with glass buildsheets permanently, so if you use one, always use a layer of gluestick. And it absorbs moisture - though really slowly compared to actually moisture critical materials like nylon or tpu - and prints really stringy when wet, so getting a food dehydrator or a filament dryer is probably a good idea.

And the “replacement” for ABS is ASA - similar material properties (actually superior UV resistance) while being easier to print.

Each material has specific strengths and weaknesses, but a good start is to have PLA, PETG, ASA and TPU. That way you can print most of anything reasonable, except living hinges (nylon) or really strong parts (PLA+, and filaments with carbon fibre).