Sony 90mm lens connection

I'm not positive it's the lens, but I guess I've fallen one too many times on my camera (in nature, not concrete) so the connection between the camera and lens is occasionally lost, like when I use my manual Laowa it shows "F--" instead of the number.
I have cleaned both, but that hasn't made a difference. It has loosened up quite a bit, when I first got the lens it was extremely tight. It's not too big of a thing right now to just adjust it or turn it off and reconnect it.

I haven't had a chance to try another lens to see if it's the camera (Sony a7R III) or not. I only have one other lens that doesn't require an adapter, and it's a bit heavier.

Any insights or suggestions? I'm not sure how big of a deal this would be to have fixed. TIA

I'm wondering if this is in part having to do with the flash (Godox/Flashpoint MF12 2-flash kit, with one flash unit on the ring) being on the end of the lens.
I used it on a trip recently, and it seemed to happen more frequently. I have it on the lens almost all the time since I need the light. With one flash unit, it weighs 7.5 oz.

I want to be able to use a Raynox with this (need to get a step ring), and that might be a total of ~9.5 oz.

Anyone else use a Sony a7R III/series with the 90mm macro and a similar flash setup? Issues or not?

Thanks

XKAES wrote: Don't assume that it can't be a problem of the camera and the lens. If you or they have "fallen" or been knocked enough it could have impacted/damaged both of them in a way that the two of them have trouble "talking". That being said, it's possible that another lens might work fine on your camera, and you'll conclude that the problem is the lens-- while if you put the lens on another camera, it also works fine -- and you conclude that the problem is the camera. Don't dismiss this possibility -- it's happened to me -- with a camera and a flash. The camera worked fine with any other flash, and the flash worked fine with any other camera.

I did ask earlier in the month when the O.P first asked if they'd checked their lens on another body and another lens in their body to try find where the fault is .
Until they do this and report back , instead of asking another question, it's hard to work out where the fault is .
Process of elimination .

@ the OP , did you try this yet ?