IIRC, healthcare now accounts for about 20% of the GDP in the US. Provide universal basic healthcare and you cover around 20% of the budget of many people. You also benefit families and people with health problems more, without having to try to give them additional benefits.
Create an adequate supply of genuinely affordable, decent housing so you don't have large numbers of people paying 50% or more of their income to rent and you alleviate another huge burden.
Then, create gig work opportunities that are well designed so that people can work as much as they like, when, where and how they so choose.
The last industrial revolution gave birth to the 40 hour work week in order to redistribute work without throwing large numbers of people out of work. Gig work done right can be a means to uncouple work from its current constraints for many people.
If your cost of living is low and healthcare is covered, part-time gig work will be sufficient to provide for your needs.
UBI is a response to automation to prevent economic collapse by ensuring demand in the face of effectively infinite supply.
If the economy can supply anything instantly[1] it is a huge barrier to entry for Joe Standard to be economically productive.
If you weren't good at computers would you have an alternate career to fall back on? I know I wouldn't. I'd be selling origami on the street corner to make a buck (and competing against e.g. Etsy, etc...)
The basic options are: slavery, mass death, or just give them (us!) money.
[1] Asymptotically approaching the singularity. Star Trek-style replicators based on nanotech. Read the lit. ;-) Amazon and the counterfeiters are already eating the sales of legitimate businesses.