Can't gain mass in arms. Tried everything short of synthol and implants lol

[puffy16]

Is your bicep still fully intact and do you have normal strength but with pain, or do you have less strength with the pain? Depending on the region in the forearm you may have to consider distal bicep tear - any pain referral to lower bicep or elbow region?

Seems pain is mostly in forearm and not bicep. Bicep looks intact. No pain near bicep or elbow, most are on forearm.