Agree with@photomax:
The number one mistake I see folks new to espresso is the focus on the actual espresso machine. The real deliberated focus needs to be on the grinder. A few years ago home baristas upgraded to expensive grinders that were designed for coffee shops. Lately the focus is on high performance “single dose” grinders with specific grinder burrs designed for specific results. A really good grinder is like the “source first” concept in audio. I cannot stress this enough: I would rather have a top level grinder and a so-so machine than the other way around.
Something like a Bambino Plus with automatic frothing and a Niche Zero (excellent workflow) would be a good match. For single boiler and long-term reliability - Profitec Go would be a good consideration, especially if you’re only doing occasional milk drinks.