Off the top of my head:
EQ
Compression/limiter
Blending orchestra presets (for instance free orchestra strings with better ones)
Two or more of the same track with detuning
Effects (chorus, slap delay, distortion, etc)
Blending orchestra presets with synth presets

Maybe it is time to quit worrying and trying some experimentation. Try using some free orchestra VSTs prior to spending any money. Note that I have no experience with the following orchestra libraries:

https://www.orchestraltools.com/store/collections/45#:~:text=Layers%20is%20a%20free%20orchestral%20VST%20instrument%2C%20and,tonal%20colors%20and%20dynamics%20with%20your%20MIDI%20controller.

https://hiphopmakers.com/free-orchestral-vst-plugins-best-orchestral-vst

https://blog.landr.com/best-free-orchestral-vsts/

Google/Bing free orchestra VST to find others. Mix and match, add effects, etc, and see if you really want to pursue this any further.

I say this with respect but if you keep asking for opinions you may get lost with all of them as everyone has opinions. Now may be the time to dive in and get your feet wet.

I hope this helps and good luck - have fun.

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It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware