You can buy a 3000 US dollars radio receiver but if you dont have a good antenna you will not listen to many radio stations or DXCC entities on HAM radio.
You can buy antenna but you can build your antenna. Some are easy to build and some are only for people who have experience with electronics and ironing.I have written many articles and given a lot of links on my 3 blogs.
I listen radio stations via a web sdr with a very small active antenne mini whip antenna.
https://www.pa3fwm.nl/projects/miniwhip/
You can build it or buy it. Cheap price or expensive
To listen HAM bands also an active antenna but more sophisticated
I am not far from having listened to 250 DXCC entities in 2 years with this wonderful antenna.
https://websdr-maasbree.jouwweb.nl/technical-information-hf-bands/antenna
Now I give you some links to make or buy medium-wave and shortwave antennas.
https://icomjapan.blogspot.com/2023/07/how-to-make-very-serious-antenna-for.html
https://icomjapan.blogspot.com/2023/05/free-in-pdf-ham-radio-handbook-by-w6pnf.html
https://icomjapan.blogspot.com/2023/08/all-popular-communications-and.html
https://icomjapan.blogspot.com/2023/06/antennas-for-listening-to-medium-wave.html
https://chinaradiosswl.blogspot.com/2023/06/loop-shortwave-antennas-for-swl-not-to.html
https://webkiwisdrswl.blogspot.com/2023/06/make-simple-dx-antenna-for-your-chinese.html
https://chinaradiosswl.blogspot.com/2023/05/a-super-cheap-super-easy-very-effective.html
https://on8alt.wordpress.com/wp-content/uploads/2017/05/easy-antennas-for-the-swl.pdf
https://chinaradiosswl.blogspot.com/2023/11/loop-antenna-for-mw-and-sw-listeners.html
https://chinaradiosswl.blogspot.com/2024/03/is-loop-antenna-for-swl-best-solution.html
https://www.dxzone.com/catalog/Antennas/
https://www.dxzone.com/cgi-bin/dir/search.cgi?query=swl+antenna
Shop to buy MW and SW antennas.
Anon-CO TECSUN https://www.anon-co.com/category/tecsun-radio-antennas
WIMO https://www.wimo.com/en/antennas/receive-antennas
They are a lot of shops and factory in the world.
For SW, it's not hard and expensive to have an dipole inverted V if you have a garden (you can make it); a vertical half-wave antenna will be good to listen to 10 to 20 meter bands ( size 5.50 meters ) for the MW a cheap loop is good or an active antenna MLA+5 its a good way because building an MW antenna is hard.
https://www.amazon.fr/SPORTARC-Antenne-r%C3%A9ception-active-MLA-30/dp/B0B5GGQLZ3
Good DX and 73
Aslo on UHF and VHF antennas are very important
