51% attack is not about nodes. The world will not make too much difference because your node is offline or pruned. And I am sure you are not a real seeding node with port 8333 open and large bandwidth to share to the whole world, you are just a meaningless umbrel node with just 8 connections active.

All this crap with "I am running a node to help the network" is a myth... you are not helping any network with a crappy node, you are only verifying your own txs. That's all.

If you really want to help the network you need a fucking good machine wide open, sharing to many leechers, with good bandwidth, port open, running on all networks. and be 100% reliable seeder for the blocks And that is not for everybody.

The world doesn't give a shit about your shity umbrel node that barely have 10 peers and also on Tor, losing connection all the time. That is not "helping the network".