200+ d20s and no rolled 20s

Multiple challenges have enabled me to grind for bosses and I’ve done well over 200 challenges and gotten to the d20 and never have I rolled a 19 or 20. Granted the odds are 5-10% but with over 200 times, it is ridiculous to not land of at least once.

Personal belief is that it’s not a real 5% chance of a 20, it’s just using the traditional dice for game effect.

I got 20 twice on this current challenge.

Hey support.

Can you answer this straight up question? Are all D20 rolls actually an even 5% chance to roll a 20?