I've been playing with Veeam for a number of months now as time permits. I still feel like an newbie.

I work in a small office with just a few people and I'll admit that I feel like I need a degree to run Veeam properly. In our case I just want to be able to do incremental backups weekly with perhaps a full backup monthly or something similar.
I've got a fair amount of IT background but not much experience specifically with backups as I've never needed to have that knowledge until now. I'm the only one here that can set this thing up and run it and I'd like something that is fairly bulletproof and not requiring weekly oversight which may keep me from doing my other jobs in the office. We've got a server running Windows 2019 Server with AD and some hyper-v VM's (one Windows and one Linux).
Ideally, I'd like to do a file-level backup (I think) for the Windows shares that we have, and perhaps file-level backups for the Linux VM and skip the Windows VM as we're not using it right now.
Is there some sort of write-up/primer on backup strategies/methodologies for those new to backups that is tailored towards Veeam -- not for those well versed in all things IT? I just thought I'd ask.
As it stands now, what I thought were my incremental backups are actually full-backups (.vbk)'s at 109Gb each and if I leave things as they are, I'll run out of disk space quickly.
Thanks in advance for any direction/wisdom that you might be able to provide!