You should add more maps to the rotation because playing the same maps is really boring. Currently the server is just looping through the same 5 maps.
Here's some suggestions:
ctf_conflict2
ctf_RSM
ctf_dankflict
cp_docking
koth_contra
dkoth_kots_a3
Please at least add one of my maps, PLEASE! I think you forgot deathmatch maps. Also Kortal could you add FUN maps like rj, sj or dj etc?
Jumpmaps are to be played alone. Deto and rocketman ones are especially horrible to play in multi as everybody's kickback effects you. Lag effects scout as well.
And I think you should create maps with a lot of playtesting and more importantly, after gaining enough game experience. Even then, you've got to take your time (which I am bad at). Maybe begin with editing already existing maps and see (in multiplayer testing if map isn't jumpmap) whether the change made the map better or not (perhaps worse). But do not worry if you don't find yourself good at making maps. If you want to give it up, do it, do not do such a thing you can't enjoy. No need forcing yourself to make maps.
And deathmatch is not a bad gamemode, but it is so different that there should be deathmatch servers instead of servers with both standard and dm maps. It's just not similar to others and requires different balancing.
You get it.