In any sane society, the government would make paying taxes easier for everyone and provide free online ability to do so. But we are talking about the US where private for-profit companies buy the legislature and prevent necessary services to its citizens so that they are forced into paying for things they should get free.
When it comes to tax paying, the government has made a deal with private tax-preparation companies that they will not provide online tax filing services but in return the companies must enable people with incomes less than $69,000 to be able to file for free. Of course, the greedy companies want more and what they have done is resorted to all manner of trickery to hide the free services behind a maze of deceptive links and also dupe people into thinking that their particular situation disqualifies them from free services when that is not the case.
The investigative journalism outfit ProPublica did an expose of these shady practices which should have resulted in the government taking stern action against the companies to the extent of abrogating the deal and providing the services themselves. But of course they did not.
But thankfully ProPublica has provided a handy guide to how you can access free tax filing software in you qualify under the income threshold, whatever your specific situation. That link also discusses how the tax preparation companies misled people into paying for the services.