I'm surprised that you have trouble with anything SKS makes. I have quite a bit of their gear, and it is likely that almost everyone on this forum has at least something from SKS, even if they don't know it. (Those baffled by this remark could ask who made their mudguards.)
We liked the SKS Rennkompressor so much that we bought a couple more. It's a tall orange pump much used by professional racing mechanics, hence the name. Far too large and awkward to take along on a bike for roadside use. It stands at the top of the SKS range of pumps, priced accordingly but worth it because a full panoply of spares and rebuild parts for this ancient design is available
for pennies if unfortunately priced accordingly; there's also a more modern-appearing version painted blue with a choice of digital and analog pressure readouts, but I don't see the point of replacing pumps that are working perfectly. It used to come with a choice of four heads, now three, including the most useful for cyclists, which has both Presto and Schraeder ports, operated by an over-centre flip lock. Absolutely no problem with mine in roundabout fifteen years; in fact, I appreciate its height as I don't bend so well any more. It moves a high column of air, so it is a boon for the 622x60mm Big Apples I use, even though it was designed for quickly pumping up high pressure narrow racing tyres.
In particular, the right head for a cyclist is black and orange, and there's no faffing around: you just push it on the valve in the correct hole to match your valve and flip the lock. But at least one of the other two heads, all interchangeable with the ones we have, is a pre-War design of brass with a serrated nut on it that I took one look at and rejected as hostile to my skin; I do however know a four-seasons Dutch cyclist who prefers this design as the simplest engineering and therefore the one least likely to give trouble. The heads come with the tube attached, so they are attached to the pump end. The available heads are shown here:
https://www.sks-germany.com/en/products/rennkompressor/ and the one most cyclists would need is this one:
Thorn HQ has stock at SJS, see this link:
https://www.sjscycles.co.uk/pumps/sks-rennkompressor-floor-pump-mv-head/and scroll down for the various alternative heads.