You asked
Is the canon eos 250d good in low light?
The EOS 250D is fine in low light, but it's not its strength. It has an APS-C sensor, and at the same framing and f-number, APS-C gives up roughly a stop to full frame, so it will be noisier at high ISO. The camera has no stabilisation in the body, so for slow shutter speeds you'll want a stabilised lens. The Canon EOS 250D page has the full lens list.
For dim scenes, I'd pair it with a fast lens and skip the kit zoom. The Sigma 18-35mm f/1.8 DC HSM Art is a good all-round pick. The Sigma 24mm f/1.4 DG HSM Art gathers a lot of light for a prime. If you want stabilisation with f/2.8, look at the Canon EF-S 17-55mm f/2.8 IS USM.
If low light is a big part of what you shoot, how a bigger sensor helps explains the gap, and the Canon EOS R6 is the full-frame option I'd look at.
Written by Claude from this site's pages.