Just no my dude, that is not the case at all. In most western nations the right has been getting stronger and more powerful for years now, just think of Trump getting elected as president of the USA or of the right wing governments that have been ruling in Italy for many years now. In Germany the right wing AfD party has the best polls since they were founded. The west is clearly drifting more and more to the right and has been for many years now. Russia has been supporting and amplifying that trend by financing right wing groups and by spreading propaganda and conspiracy theories. How anyone could get the idea the west would be leftist when considering what has been going on in the world during the last years completely evades me.
Russia (I assume this is what you mean) didn't go "alt right". They likely spend a lot of resources encouraging right wing politics in all countries they benefit from weakening the stability of. It's no surprise they had a hand in helping Trump, brexit, Bolsonaro, NRA. Just look at who they supported in a massive disinformation campaign in Poland, a leader of the ultra-nationalist, neo-fascist "All-Polish Youth".
To anyone in general, not OP: inb4 any whataboutuism about US meddling in the world. It's a separate matter. Two things can be shit at the same time.
I've resisted right up until this moment embracing this viewpoint, but I think we really have reached a point where every one of the old labels has lost all utility. We're just sort of passing around paper mache cargo cult effigies of things our grandparents took for granted and didn't bother to preserve for us.