It has to do with a lot of issues within the right that I'll try to break down.
1. They lack the qualities (unity) of the left and often time believe people are blank slates or that objective morality exists instead of programmed morality. In other words they believe if something is wrong (What I would argue objectively) they assume everyone who is sane will line up and agree or take a stand... They fail to realize most are cowards even amongst their own ranks.
2. They have failed to realize that you CAN be an individual and part of a group. One is not mutually exclusive or vice versa. When fighting for a goal or against an enemy one must act as a group.
3. They side with groups that aren't actually on their side. How often do we hear "Minorities are standing with us..." 83% of them aren't... They take one exception of a group claim it's going to work out and basically apply what I pointed out in number 1. "Man I would hate to be given free shit and treated like the democrat's bitch" -Republicans. The problem is it's projection because most minorities don't give a shit. If you became president and offered them a free soda a day just to continue voting for yourself they would. Freebies sell why the Black Caucus turned on the Republicans and voted for Biden. It's not servitude, it's not brainwashing, it's the right trying to make enemies of their enemies their friend. Same with the "catholic Hispanics" and "Anti-authoritarian Hatians." lol. They never learn.
4. The people that would side with them they push away that will fight or stand by their side. The one's trying to give them a rallying cry are called extremist or glowies and frowned at because they don't want to be destroyed or have everything fall into shit.
5. They've become lazy because their leaders tell them to be, and fall back to 1 and 2. The ones that aren't and have a spine or are willing to do something are the minority and have no safety net or are shamed by their own group and get beat worse than a dead horse by their own side.
And my personal favorite :
6. The left plays to win. Not for morality, not for honor, not for your compliments, not for your validation or love. They aren't afraid to be extremist, and they aren't afraid to abuse power.
Some of these by themselves wouldn't be so bad but a combination is what has destroyed the right wing or made many would-be allies not able to side with them. Some members are great, but the problem is when you are the minority of that group it's a shit show.