One other thing to note is that even if you know how to sew the mens patterns that are out there don’t have a lot of style and the style that are available are often ugly or dated (lots of this. So you’d either have to stick with the limited patterns available or learn to pattern draft which is hard (but fun!). Here’s the best book I’ve found (better than the pattern drafting course I took when I was a fashion major).
Try to find it at a library, especially if you leave near somewhere with a fashion program and just scan the section on menswear (you can also sometimes find it used) into a pdf.

Also, if you are buying a sewing machine I strongly recommend a pre 1960s singer. They can usually be found cheap in secondhand shops or craigslist if you look around (mine was $35) and while they are often straight stich only (a good thing if you don’t mind attachments for zigzag or whatever because the straight stitches will be straighter) they are sturdy, last forever, and of comparable quality to the thousand dollar top end machines today. They are also very easy to use. You’ll probably have to fix it up a little because even if it seems to be in good working order for electrical safety you’ll want to at least change the wires. That said, it’s fairly easy to teach yourself to fix them up and there are a lot of resources on the internet for it as long as you already know some basic wiring (you can also pay to get them repaired some places but that costs more). The total cost of my Singer 201 was $75 (this included buying parts and a soldering iron and wires) and it’s the best machine I’ve ever used.