No. Crit chance is capped at 100%, Crit Avoidance is also effectively capped at 100% since CA is a multiplicative modifier to the final crit chance, so at 100% crit avoidance you can never be crit ever because 100% crit avoidance mutliplies the attacker’s chance to crit by 0.
The flat crit chance from crit vulnerability is nit affected by your % increased/more crit multipliers but it is still affected by the defender’s crit avoidance because crit avoidance is the last term in the “has the target been crit” calculation.