So hi all again i wanted to ask how to get a pet in dbo?

pet crane game machine may be one by the lil girl with a puar pet. in some towns

just go to the pet npc and you will find a machine close to the np
I think you need 2000Z or something like that

yep , its around 2591 or so for a pet capsule , but be aware that as far as i know those eggs could only contain the normal pets , the purple and blue robots (the ones with hands and legs) the blue or red dragon and thats kinda it , if ul aim for puar or those majin like pets those come from cash shop capsules.

what do pets do

The pets are mostly just for the 'looks' , but they can also use some rings that give them some ability`s like the two u can buy in game , one is for mailbox access from anywhere and the other hides ur armor from scouter scaning i belive , and i herd there are more in the cash shop but idk what those do.