Welcome, megabutter and gypsierosegracie! Besides Coyote Forte (which really does make a difference) and RealTracks and RealDrums (which make an unbelievable difference, you can use other VST and MIDI instruments as well.

If you want to do it for free, my recommendation would be one of jazzmammal's choices, SampleTank. The full version, with a ridiculous amount of noise, is indeed $229 MSRP, but the free version still has about 500 MB of sounds. (They are both, in fact, the same software; what you're paying for is the samples.) To use it with BIAB, follow these instructions, substituting "SampleTank" for "ARIA Player".

And, of course, there are lots of videos and resources right here at PGmusic.com. Good luck, ask questions, and have fun!

Best,
Tom Smith
Win10/64 • i7-8700K • 24 GB RAM
BIAB 2025 • Reaper 7 • Izotope MPS
AKG C1000S • IK iRig I/O Pro