What are some good commands to troubleshoot my helm deployment? - kubernetes-helm

Question

So I'm working on my first helm deployment. I'm working on deploying polr an URL shortener.
I'm having issues with my first deployment. Absolutely nothing starts up and I'm puzzled about where to go from here.
I'm using commands like..
kubectl describe deployment/polr
helm lint pre-polr
helm install polr pre-polr --dry-run --debug
However, it doesn't give me any good details and since there are no pods spinning up. I feel like I'm missing some commands that might help. Could anyone suggest any?
Here are my manifests:
Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
name: polr
labels:
app: polr-app
spec:
replicas: 1
selector:
matchLabels:
app: polr-app
template:
metadata:
labels:
app: polr-app
spec:
containers:
- name: polr
image: matthewspah/polr
ports:
- name: http
containerPort: 8080
protocol: TCP
readinessProbe:
tcpSocket:
port: 8080
initialDelaySeconds: 5
periodSeconds: 10
livenessProbe:
tcpSocket:
port: 8080
initialDelaySeconds: 15
periodSeconds: 20
- name: polr-db
image: bitnami/mysql
ports:
- name: mysql
containerPort: 3306
protocol: TCP
readinessProbe:
tcpSocket:
port: 3306
initialDelaySeconds: 5
periodSeconds: 10
livenessProbe:
tcpSocket:
port: 3306
initialDelaySeconds: 15
periodSeconds: 20
Service
apiVersion: v1
kind: Service
metadata:
name: polr
labels:
name: polr-app
spec:
selector:
app: polr-app
type: ClusterIP
ports:
- port: 8080
targetPort: 8080
protocol: TCP
name: http