Provide a safety net for those on welfare, and low income citizen medical needs, remove state trade barriers to keep prices down, and provide for catastrophic conditions. Most of us have already purchased Medicare during our work years. Other than that, get the government out of the insurance business. Everyone else is on their own to purchase from whom they want.
If anyone who can afford it doesn’t want it, so be it.
That is the correct conservative answer.
However
It is now 31 years since President Reagan signed the Emergency Medical Treatment and Labor Act (EMTALA), which requires hospitals and doctors to provide free treatment without compensation to persons who cannot (or will not) pay for their care.
Your proposal, in order to work (and by work, I mean, without printing money or borrowing it from China), MUST refuse care to the person who "doesn't want [to buy insurance]".
This perfectly rational, conservative, common sense approach cannot command five votes in the US Senate, or 50 in the House.
Therefore, it is not going to happen.