Not sure if the game has gold chests in it or not, but maybe their could be gold chests in every part of the map of every battle you and your pets face, like maybe put 10,000 gold in the gold chests and make it where its very rare to come across while you walk thru every battle, like how you find objects, that would be helpful then gold will be much easier to find but don't make it too easy to stumble across a gold chest, just a thought is all.

There are chests with gold in them? The ones in regions 1 & 2, and Sweet Blossom Orchard and Astryl's Tranquility, typically have 50-1000 (rough guesstimate of range I don't really spend any time in those areas), or equips (which can be sold to the site for gold), and the Lost Grove has chests that typically give a few thousand but on occasion can give 20k+ (I know for a fact that I've gotten at least one that has given me at least 50k, and I think some people have mentioned getting something like 100k on occasion?)
Gold is very easy to make in any case, via Missions/Mission satchels and selling the junk equips that you get from wherever

Well I struggle with gold so I can't really ask people to buy my pets cause that fails like 99% of the time, even when I have such low prices! And i'm talking VERY low just to get gold, like my price is 2 gold to like 50 gold, and that's when people aren't picky

I'd suggest takign a look at the Guide to Making Gold and the Guide to Missions and Mission Pets
Pet sales do not typically make up much of a person's revenue (unless perhaps if they have well-established, completed Project(s) on sale)- Missions are the main steady revenue.

Also lower prices often can seem like you jsut want rid of the pet. Like I know the released release stuff under 100g and most people avoid low price and very high price because unpopular or ugly pets are often very cheap and hoh prices are too expensive