Getting going with Dumbbells.

-RDL (single or double leg)
-Lunges
-Calf raises
-Bicep curl to over head press (favorite)
-Single arm rows
-shoulder raises
-Shrugs
-Tricep extensions (standing or laying on bench)
-Flat/decline/incline bench press
-Forearm curls (move hand to each end of handle and lift opposite side)
-weighted sit up (hug the DB)
-sit up with DB over head
-Russian twists

Top db exercises imo:
Push:
Incline db press
Db shoulder press
Lat raises
Skullcrushers

Pull:
Chest supported rows
Pullovers
Rear lat raises
Zottman curls
Spider curls
Hammer curls
Concentration curls
You get the curl idea

Legs:
Farmer walks
Db RDLs
Bulgarian split squats
Lunges (reverse, walking, regular)
Hamstring curls

all the carry variations

farmers carry
waiters carry
suitcase carry
stagger waiters/suitcase carry
front rack march

I normally do all 5 variations up and down my driveway 5x at least 3x a week

I sold my bar and weights years ago when I switched jobs and joined a gym in the building next door. It was just easier to go at lunch than try to workout at home at night. Now I've switched jobs again, and during WFH time, I expanded the dumbbells I had. I get plenty of good strength work in with just DBs.

I do DB press, chest fly, standing chest fly, narrow grip DB press for chest. Sometimes incline chest press as well to mix it up. You can do all variations of rows, single arm to double arm, varying grips etc. for back work. I love doing frontal and lateral raises, and Arnold Press for shoulders, and upright rows. Admittedly shoulders are my weak spot, so I've been focusing on that lately. Legs are wide open. Squats/lunges/split squats/deadlift. And the tried and true curls/tricep extension/kickbacks for arms.

I have lighter sets at 8, 12, and 15 lbs for smaller movements. And two sets of adjustable handles. I typically load one at a medium weight and one at a heavier weight depending on what I'm doing. I'll have something in the 25-30 lb range that I can use for overhead press, chest fly, curls, and bent rows. Then something 40-50 lbs for chest press, single arm rows, squats and deadlift, and lunges. The 12-15 lb sets are used for standing chest fly, front/lateral shoulder raises, triceps extensions, and other movements.

IF you want DB only workouts, then check out Dumbbell strength by PPSA

Ryan Fischer has some monster dumbbell programs