Good advice, multiple threads make it difficult. Also PLEASE DON'T SHOUT AT US! we are just other Buyers and Sellers like you - you haven't reached eBay here. There is a Chat with the eBay Community Team each Wednesday from 2-3pm if you want to voice your complaint in person. 😉

Meanwhile, you may be correct that eBay are hiding your listings. Why? Because of how Best Match Search works. The eBay algorithm does a very good job of showing in Search what a Buyer is likely to purchase. Search does not show everything available. In fact, you gave eBay permission not to show your items to Buyers at all (by accepting the T&Cs).

So how can you improve your visibility in Search generally, not just of the military items? eBay says it relies on four main things (besides previous purchase history) which are 1. Title 2. Details 3. Photos and 4. Price. In that order of importance.

The first four words of your title are most heavily weighted. Yours are good but there is room for improvement. Words like of, the, ltd are usually unnecessary and waste keyword space. Conversely the right keywords are important. It looks like the Weaver Tobacconist's Sign would sell quicker with Lambert Butler and Tobacco in the title. And your Esso/Michelin keyring bundle would sell with 'I've got a Tiger in my tank' added.

Your item specific details look good. I can tell you are an experienced Seller. Good use of Condition field, using it like a free Subtitle!

Some of your photos are monochromatic and need better contrast. Blue item on blue background, for example. Or metallic cool grey item on warm grey wood background. These are easy to scroll past. The reverse would work better (bright blue on warm wood, cool metallic on bright blue).

All that said, if a listing is terrible with blurry photos and poor details it will sell if it is a desirable item at the right price. When things are slow do you use Research tool to check 3-year sales?  These will give you a reasonable idea of how much the Item is actually worth. For example no photographs of The Night of the Garter Prize Bulls have sold in the last three years. The generic equivalent sold for £28, and yours is listed for £75. This is okay, but you need to be prepared to wait years for the right Buyer to come along at that price.

Why did I mention the three specific items? They were listed over 5-months ago and have no sales' history, which makes it more likely eBay will hide them from Buyers. When things are slow, it might be worth revisiting your oldest items.

You may have noticed Description is not one of the four. Most modern Buyers don't read it at all, or if they do they are reading it on their phones. Yours look good, but could be made more legible. One font style, one size, in black only, and not ALL CAPS help Buyers not to give up part way through. They could also be made more brief. Some of your details could be moved to About or deleted all together. For instance Buyers don't need to know about instant payments here, they will quickly see it when they go to Checkout. Good luck reviving your listings including the military ones!