Help! My WFH chair has given up on me

Hey everyone! Quick question, does anyone have an ergonomic chair they genuinely love for their home setup?

I've been remote (on&off) since 2022 and I keep buying budget chairs around the 3k mark, hoping one of them will stick. The last one I saved up and waited on sale for was advertised as nicely cushioned, and the reviews said the same — but it really wasn't once it showed up. I never got around to returning it either; it was heavy and just felt like too much of a hassle. Lesson learned! 😅 These days the seat won't stay up and it sags to front side, so I keep sliding forward while I work.

I'm ready to invest properly this time in something solid that'll actually hold up over the years. Sturdiness and a good weight rating are what I'm after.

Would love your recommendations — brand, model, and ballpark (links) price if you're comfortable sharing. Thanks in advance!