im also mostly single player. trading is my only exception. ill prob eventually do some world bosses, group dungeons, and trials, but im not ready yet

i cant stand scribing. idk maybe there are good skills in it, but its too much for me rn

i did notice the decrease in prices. prices of tri-pots have gone from ~1k to ~700

research items that sell well. i sell essence of health aka tri-pots (columbine+bugloss+mountain flower) and essence of spell power (corn flower+lady's smock+water hyacinth/namira's rot/crimson nirnroot). to be an alchemy merchant you need max level alchemy (this guide is pretty good) and you need put max points into solvent proficiency, chemistry, and laboratory use. these perks will let you make max level pots, make 4 pots for the price of 1, and use 3 reagents. use this site to track deals on mats, thats the NA link, the same site has stats for EU server markets. look at how much you can sell stuff for and multiply by 0.92 (7% is lost on purchase, and 1% is lost when you list the item), then buy mats at a price low enough that will ensure you profit. you can also max other crafting skills and sell craftable armor/weapon sets, but that requires a lot more research bc you need to know which sets are popular, what traits go well with each set, and you have to have a lot of traits researched. alchemy and enchanting are the easiest to get into quickly.

join guilds with a trader in a high-traffic area (daggerfall, wayrest, mournhold, elden root, rawl'kha, belkarth, etc.). these cities have 5-7 traders and sell items quickly. most guilds with traders in these cities have quotas you have to meet, so be prepared to sell before you join. if you dont meet the quota you may be required to buy a lottery ticket which can range from 10k-30k, and these quotas are typically weekly.

also you can get the Master Merchant addon which tracks all sales from all players of guilds you are in and lists them in a neat table so you can see exactly which items are selling and for how much. read the description of the addon bc there is a very specific way of getting it to work correctly. also Harvest Map is great for tracking where the raw mat nodes are if you want to farm mats instead of finding deals. im on Linux and use Minion to manage my addons, works perfectly and its easy to find addons and their dependencies. almost positive its available on Windows too

best of luck!