You can (and should) provide fair access to voting without making it mandatory. Most people would probably submit a valid vote anyway, there’s a lot of no/low information voters already and refusing to vote, for example to boycott the election or for whatever other reason is also a valid political stance. Plus I’m not a fan of any financial penalties because they’re basically an extra civil rights subscription for the wealthy who can afford to pay the fines, while a poor person who doesn’t make it to the polling booth gets disproportionately screwed.