To be honest, research is key with buying telescope equipment and budget.
It can be massively expensive.
Or like my setup, you can go a more affordable route.
Depends on if you want a goto telescope set up. Or like mine, manually do it.
My setup in the link below
https://eu.community.samsung.com/t5/galaxy-s22-series/s22-ultra-astrophotography-part-1/td-p/5199371...The website below has really good information on equipment
https://meteorwatch.org/equipment/Also finding your local astronomy centre or club will be a gold mine of information
For me I wanted a goto telescope, but I'd have to compromise on size and type of scope to get.
So I got the largest I could afford at the time and the bonus is you get to learn your way around the night sky with manual setup. Though it does take more work.
Also remember if you want to do long exposure photography, my setup won't be any good for that