The answer is that there is no real, substantive, solid meaning to the terms Right Wing/ Conservative/ Republican/ Reactionary - all definitions are arbitrary and incoherent, hence unconvincing.
There is a meaning to Left Wing/ Socialist/ Liberal/ Progressive - and I think we all know what that is although we often mistake the emphasis, which has changed and continues to change - because its agenda is negative - its coherence over the centuries destructive.
But 'the Right' is in reality Religion: Religion as the basis of socio-political organisation. Religion is therefore an aim, not a programme, not a blueprint.
There can be no non-religious Right, no secular Right - because, to base a society on non-religious principles is in practise to exclude religion from the public sphere as a reason and explanation - and this is itself a Leftist principle. It is, indeed, the primary, original and foundational Leftist principle.
The millions of people who regard themselves as Right Wing but who do not favour a religion as the unifying basis of social organisation, are deluded. There is no such political ground for them to occupy. They are actually a type of Leftist, a Leftist with - perhaps - an unusual emphasis, but that is all.
Non Religious self styled Rightists are aimed in the same direction as other Leftists because they use the same evaluative criteria, which is hedonic, this-worldly, human, mortal and psychological: the pleasure-pain, gratification-suffering scale.
(By contrast the primary Religious scale of evaluation is located outwith, elsewhere than, the mortal, human world.)
In sum, the Right is on the Left. Because if you don't regard Religion as the basis of society, you are on on the Left.
To summarise - the polarity of political life lies between a society organised on and around the basis of some Religion - and Leftism, which is organised on some other basis.