Downhill hardtail Mountain bike
It appears to be if you ask me your cycle is a basic XC mountian cycle. Perhaps not a good cycle, on correct price, nevertheless suited to off road usage. I wouldn't just take if off a 2 meter drops from day to night, however it is OK over not as much as about 300mm (1 foot) and more once you learn simple tips to secure. If you keep consitently the tires on a lawn it will probably handle most songs.
Improving the fork to more travel can change the geometry. Way too much is a poor thing, but 20mm approximately must certanly be OK. Be cautious about trying to make a silk bag from a sours ear though - an entry level XC tough tail won't be outstanding down slope device. Studying the range of upgrades, it would be far better to begin with a bike nearer to everything you really want.
For breaking the bike etc - it'll not likely fail catastrophically from typical cycling, but it's not a 20kg downhill container, and components breakable if mistreated. Driving style and skill, as well as your weight, plays a part. A talented driver manages the bicycle over the bumps and landings, and trips "lightly" and unskilled rider can secure extremely "heavy" on smallest lumps and jumps.
Theres nothing incorrect with a hard-tail for down hilling - not that many years ago people rode no suspension on what we currently give consideration to "Light" down mountain tracks (I regularly land 2 meter leaps with no suspension system.memories... the early 90's, just like life, MTB's were a great deal easier - 2 rims, 18 gears, chosen metallic or metal frames and another size almost meets all. ),