Link to some VNA products that can work to that frequency range (but maybe not that cheap)
https://www.everythingrf.com/News/details/11495-top-10-vector-network-analyzers-in-2020

Build Your Own RF Lab: Scalar Network Analyzer
https://www.hackster.io/news/build-your-own-rf-lab-scalar-network-analyzer-d1fd1ce02215

A simple scalar network analyzer that can be controlled by a Raspberry Pi for measuring the frequency response of filters and networks.

Merrifield’s design accomplishes an SNA’s functionality via implementation of a DDS Synthesizer chip, an ADC, and a logarithmic amplifier chip. The AD9850 DDS is responsible for outputting the sweeping sine wave while the AD8307 logarithmic amplifier conditions the signal input into the SNA for the log of the signal’s envelope before passing it on to the ADC for digitizing.

https://hackaday.io/project/164610-scalar-network-analyser

[Steven Merrifield] built his own Scalar Network Analyzer and it’s a beauty! [Steve]’s SNA has a digital pinout matching a Raspberry Pi, but any GPIO could be used to operate the device and retrieve the data from the ADC. The design is based around a few tried and true chips from Analog Devices. He’s taken some care to design it to be nice and accurate which is why he’s limited it to 1kHz to 30Mhz. We think it’s quite a fetching board once the shielding is in place.

https://hackaday.io/project/164610-scalar-network-analyser

Steven Merrifield designed a simple scalar network analyzer using a DDS, log amplifiers, multi-channel ADC and a generic I/O interface.

Electrical engineers will recognize the Bode plot as a plot of the frequency response of a system. It displays the frequency on the x-axis and the phase (in degrees) or magnitude (in dB) on the y-axis, making it helpful for understanding a circuit or transfer function in frequency domain analysis.

[Debraj] was able to use a STM32F407 Discovery board to build a Bode analyzer for electronic circuits. The input to the analyzer is a series of sine wave signals with linearly increasing frequency, or chirps, preferably twenty frequencies/decade to keep the frequency range reasonable.

Plotting is done using Python’s matplotlib, with the magnitude and phase of the output determined analytically.

Bode Analyzer using STM32F407 Discovery board
https://sites.google.com/site/hobbydebraj/bode-analyzer-using-stm32f407

Now the complication, if different output frequencies are needed: -

Keeping sampling frequency of 200KHz and output of 1Hz = 200,000 points in 1 sine table.
Keeping sampling frequency of 200KHz and output of 10KHz = 20 points in 1 sine table.

Review of the Omicron Labs Bode 100 50MHz Vector Network Analyser / Frequency Response Analyser and some experiments measuring bypass capacitors and characterizing a quartz crystal.

Bode 100 Vector Network Analyzer
https://www.picotest.com/products_BODE100.html