Try this, It works well, read the instructions carefully and give it a go
github.com/rlancaste/AstroPi3
It's what I and a lot of other people on this forum use with a raspberry Pi 3B+ or Pi4. It takes a while for the initial set up but works fine over VNC or via Indi web manager.
Get a 32Gb class 10 SD card flash on the operating system (use Raspbian if you are using a Pi4 or Ubuntu Mate for a Pi3B+) connect the internet, monitor, mouse & keyboard to the Pi then follow the instructions and run the correct script from terminal.
Works every time for me.

Regards Alan

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