All Bremen state have low peer, what could be the problem
It may be less if other full nodes are located far away from you and it is not attractive to contact your full node. But it’s not a big problem.
You can try to increase peers default number adding these flags when launch node:
Where in XXX put an integer number…if I remember correctly by default should be set to 50. By putting something like 200 or 300 your data traffic usage will increase a lot, but your peers number should increase too.
btw you can open the port