Car 5sp manual, has factory alarm activated only by locking or unlocking by key

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Has plenty of battery power, when u turn key, whether holding clutch/brake in neutral, 90% wont turn at all, tried bypassing starter by popping clutch, unsuccessful, almost seems as if kill switch from fact alarm gets stuck, preventing engine from turning., occasionally afyer using key to engage/disengage alarm several times back 2 back, it will turn but not catch to start