Zoltan, you can certainly make use of SENDs to tracks with reverb and also delay on. Sometimes you could create two and pan one left and the other right with different reverb and/or delay on each.
As a basic ‘rule of thumb’ I generaly start with drums and bass in the middle, lead vocal middle, backing vocals off-middle, and other instruments panned either left or right. If working with say a single guitar and keys track then I’d pan them on oppopsite sides but probably not a high degree of pan.
Could be 15-20% on either side. I find in that case if pan a high degree can make the overall sound a little too pulled apart.
But it always involves a lot of experimentation and tinkering to get panning, levels, SENDs all balanced so the overall has the fullness and width but hangs together.
Another strategy is to double-track or duplicate the guitar track. I wrote about that in a reply on Pam’s latest recording here: BYE BYE LOVE Cover - #31 by DavidP
If you are interested then you’ll find many channels on YouTube with people talking about music production. I really enjoy it, as much as I enjoy playing. But like playing, one needs to find good learning material and practice.