seconding this; unless you’re paying for it: they use your data to make money and have (and do) make use of your data as leverage to get you to pay more.
setting up your own home server that’s accessible to the internet is much cheaper, but it does come with risks that you must make yourself aware of to mitigate.
Veronica Explains did a fascinating video on multimedia generation a little while ago.
it’s not exactly what you’re seeking, but my own experiences with going outside the norm with multimedia in linux gets you into niche territory REALLY fast and the best way to find you’re seeking to ask people; so i would ask Veronica if they know anyone who might be able to help.