It's possible to find items that are in good shape all the same.
I'm always amazed at what arrives in my local thrift in January. People get rid of a lot of very nice clothes and footwear at the end of the year here because you can take a deduction of estimated used value when you do your taxes (the thrift chain has an online table of brands and official value to refer to) and they also donate what I suspect is unwanted Christmas gifts, often with original tags.
I generally buy to wear, so I'm picky (though I do sell the odd thing on Poshmark), and there are fitting rooms in my local thrift so I can try things on. I go over articles I buy very carefully and never buy anything I can't repair easily. Small holes in cashmere are easy to repair. Grease stains are not always an easy fix. Ball point pen - no way. Bobbles - I have a bobble shaver.
I have had boots re-heeled and zips fixed by my local cobbler, and he has also managed to get an ink spot out of a 1970s Coach bag I didn't want to ruin by having a go myself. Some items are well worth the extra expense to restore. There are brands that are very durable, and if you buy a classic style you'll always look good. Chelsea boots, DMs, crew neck or turtleneck cashmere or fine merino sweaters, well made trousers, bags with a classic look, are all worth buying. There are brands that specialise in a 'classic' look, with clothing, accessories, or footwear that will last well because it's very well made.
My recent finds are a pair of satin trousers to wear to a wedding, a down-filled winter coat, with detachable hood and interior pockets, an embroidered black velvet jacket (Laura Ashley), and a pair of silver Ecco loafers.