Is there any cheap upgrades for my build?

Yeah, that weapon doesnt have + to skills is already a point to start, pick a magic weapon with t1 phys% on the market and craft one with the essences, its pretty deterministic on the outcome so you can get a better weapon easily. Other than that your gloves should have +2 to melee skills and attack speed, get flat dmg rolls of possible. Change that belt for basically any rare belt with double res and str or triple res, on the prefixes armor and life are the best. With that change your armour to a brass dome so you will have a way higher armour to multiply from. For a warrior I like to go with titan's grip so you can use a shield with the 2h, the shield alone can grant you a lot of resistances, armour and armour to ele dmg. Alternatively you can go the phys to elemental route using a lightning coil or the fire one

According to the poeninja you're missing the tattoos

Headhunter is funnily a cheap upgrade this league so that probably lol.

3 ways to get rich quick:

1 - Farm Omen of Light (kind of annoying having to remove smoke creatures)

2 - Farm Branch Splinter (easy and fun, just do rift after rift and sell the splinter)

3 - Build the Temple (this drives you crazy and makes you quit the league or makes you happy and rich, it depends on your perseverance)

Then you can build whatever you want at will.

Since you're playing a warrior, I'd recommend Titan Whirling, but I'm not sure if 35 div is enough... Try building a Titan Whirling that can handle level 15 maps so you can farm your breaches. If I'm not mistaken, use a surround helmet which lets you use skills without mana, use a unique chest piece with lots of armor, a decent staff, and the rest should be fix resist and level skills; there should be several build like this in PoE Ninja.

Have you anointed your amulet?

You have good gear. But then you randomly use that belt. Why?!

You can get 3 Grand Spectrum rubies for cheap. You should do something with your weapon swap tree (free 24 points).