Why Shouldn’t Ukraine Insist on Security Guarantees?

Russia has historically treated Ukraine very poorly when it was part of the USSR.

Russia invaded Crimea in 2014

Russia has funded a proxy war for 8 years in the Donbas region.

Russia launched a full scale invasion of Ukraine in 2022.

Seems to me asking for a ceasefire is just going to lead to more death and suffering down the road from now unless Ukraine has a way to deter more Russian aggression.

Sure maybe the U.S. doesn’t want to provide any security guarantees. But why would Ukraine want them involved with the peace process if they don’t? If the U.S. doesn’t want to be involved in overseas affairs, why should it have any say in what happens overseas?

Edit: I want to thank everyone on the right that responded to this. I'm starting to see that there is a very large range of views from the right concerning Ukraine. I don't agree with all takes, but I definatly see where some people are comming from. Thank again!