I’ve been trying out engineering with a character I boosted from 70 to 100. When making stuff to sell on the AH as an Engineer, how do you do it efficiently? I’ve been told gathering the parts on your own takes too much time (like mining all the ores you need), but I don’t have an influx of gold to buy whatever I want off of the AH (example being Living Steel. Wanted to make one for myself until I saw how ridiculous the process to make them is and how expensive they are)

The key to making a lot of money with inscription comes from combining the sale of Contracts with the sale of Glyphs. It’s not uncommon to see some Glyphs swell to 4000% of their normal value during times of increased scarcity. This means less stable income but much more lucrative prospects. Even though this guide assumes you are pairing Herbalism with Inscription to farm your own mats, under certain conditions it may be a better idea to purchase the materials from the auction house.

Just kidding, but yeah people just need to actually look at market and if they have the slightest interest of making gold, there are tons of options. But people basicly want 100k gold per day, without having to research for that niche and neither do they want to take long. I honestly wouldn't even bother helping someone that doesn't put the slightest effort in.
JC Panthers: Instead of breaking them all down like I did with the golem, I'll just note that currently on my server the Orb of Mystery and the Living Steel combined cost 36,000g. All of the panthers, except the Onyx, sell for 32,000g. A loss of 4,000g/unit, not including the gems. Once we factor those in, at a mean value of ~200g/unit, the loss per Panther jumps to 8,000g.

At least they didn't require dungeons and raids to get through the basic skilling-up this time; I remember a lot of people were unhappy about that in Legion; I boosted some through for quests who weren't comfortable in a queue. It was always a traditional occupation for people who don't/can't group. Again, I appreciate the small mercy. They may need to strangle professions, but it was unnecessary to be just mean to people.

There's a few profession crafted pets in BfA on the horizon - Battle for Azeroth Tailoring is getting a Hot Air Balloon style pet, and BfA Alchemy looks to be getting a brand new Transmute Meat to Pet. There are some mount buff consumables from both BfA Leatherworking in the form of a mount barding, and Blacksmithing in Battle for Azeroth will be able to craft Stirrups and Hoofplates to increase mount speed and allow you to interact with things while mounted.