I don’t know your filament is “wet” but all of the Bambu PETG HF I’ve dried so far has been. If you aren’t drying it then it’s a good chance that’s your issue.
On filament dryers and using the printer to dry, results will depend on your ambient humidity. Ambient humidity imposes a floor you can’t go below when drying filament. If you have high humidity, you may see mixed or minimal results. This is probably the reason so many have such different experiences with filament and the anecdotes and experiences are so varied.
Battery powered hygrometers are really cheap now but there are two main branches in the market. Many of the least expensive hygrometers can’t display values below 10%. When humidity goes below that value they just display 10%. Others will read down to 0 or 1% RH but at the extreme response gets slow and accuracy likely isn’t great. But its own numbers compared against itself should still be useful if you are able to get below 10%.
Another thing to do is just put a fresh spool and a hygrometer into a ziplock bag or polyethylene cereal storage box and let it sit for 10-12 hours. The moisture in the spool will equilibrate with the moisture in the small amount of air in the bag and the hygrometer will come to read the “humidity” of the filament. It’s not a direct measure of filament moisture but is an indirect measure. If you’re seeing 30% RH or above it’s probably too high.
My drying is different from most others and if I do that test my spools pull down below the 10% my hygrometers can read. Fresh from the bags they’ve been above 30%.