I am not finished with my thread about beginners equipment, but I am more or less finished with my answer to your question about the budget clothing I recommend.
I guess, that you have some T-shirts, swimming breefs and underwear and a thicker cotton shirt in your wardrobe, so the amount of money you really have to invest now shouldn't be so high.
Do you just own some bushcraft equipment like a Rucksack, a Swiss army knife, an old little camping pot, a small torch or head torch, a 600 g hatchet, a folding saw, a compass or whatever?
In some cases I would recommend you to buy equipment from other sources, if you have nothing, but if you have this and that, I would recommend you additional to it some cheap but good Decathlon stuff I didn't write about.
Just give me a list of the stuff you just have, so that I can think about how to complete it for the beginning in the cheapest way.
Throw your stuff on the kitchen scales and write in the list the exact weight of every piece!
You could show me some photos of your stuff, you just take the picture with your smart phone, visit the forum by using it and press the "Paper clip -Attach files" button, under the text you write, so you easily can integrate them.
Usually a man of your age should be able to find enough stuff in his wardrobe, kitchen, shed, attic and cave to go in the bush without buying anything special.
You just habe to think about it!
The clothing I recommended to you is good.
But regarding the other equipment I recommend you to use, what you have and invest in quality equipment step by step. That's better than buying every thing cheap.
Some parts could be bought very cheap, as throw away articles, to concentrate your current budget in a few good things.
Because less is more if we go hiking, there isn't so much stuff you really need to buy.
The cheapest and lightest equipment is the equipment, that stays in the shop!
What do you work exactly?
Do you build attics or do you make furniture and have every tool for that?
A lot of equipment a carpenter can make in his workshop faster than he can find and order it in the internet!