I went through something similar and ended up investing in a better desk, so I get it.
Secretlab and Autonomous are solid options, but what a lot of people don't consider is that adjustable desks (like the ones from Autonomous) are great if you want to switch between sitting and standing throughout the day - that really does cut down fatigue quite a bit.
If your budget's tighter, brands like Flexispot also have good value for money and hold up well without things wobbling when you rest your elbow on them. Honestly, any of these will last you years if you take care of it, so weigh it more against what you'd spend on posture corrections or back problems down the line.