So , my guitar is cracking , mainly when strumming.

It's a dean razorback , passive pickups. Tried it on a different amp, same problem.

No crackling when turning nobs ( trying to see if it's the volume pots, but it's not specific to it ) .

Crackling present on both neck and bridge pickup . Different guitar with same cables and amp had no problems.

Same guitar with different cables and amp had the same problems.

conclusion : Issue with the guitar, not amp or cables.

Any idea what's going on? I don't want to take it to a tech since it would cost me 100$ to take it there, and god knows how much to fix it ( no close techs, closest one is 100$ drive away , i live in dubai )

output jack is not loose, and wouldn't a loose cold solder make it cut off? not crackle?
have you cleaned the output jack on the guitar with electrical contact cleaner?

spray some on the guitar lead, then work it in and out a few times. You may want to do this a few times.
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