🧟 I played on normal difficulty, but perhaps this method will be effective for everyone;
🧟‍♀️ found two gas cans. At first it's better to refuel your bike and then bring them to the roof at
⠀ ⠀the place indicated below if there is not enough equipment;
🧟‍♂️ collect resources in the location.

Three shots in these places:
1) towards the sleeping horde;
2) at the exit;
3) near a sign.

From the sign to the left to the destroyed shed. Jump on it from the opposite side and wait for 100 freakers to gather under you.

1. Throw the gas can and shoot it. The same with the second one.
2. The throwable weapons can be used between boards of the roof, but roll in the other direction
⠀⠀after throwing an exploding one so that the blast wave doesn't hurt your character. The traps
⠀⠀should be placed here:
3. If you are out of everything, there is a melee weapon in your inventory. I didn't find a safe
⠀⠀spot, but when there are few monsters, then a pier located nearby will be useful.
⠀⠀⠀⠀⠀⠀⠀⠀⠀Come to its left side and jump over a wall - you'll find yourself on a table.
⠀⠀While standing on it in the corner, they can't touch you from a floor, but they will follow the
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀same way.

According to damage information I found, their number is smaller for hard difficulties. I tested the number of the enemies that were defeated for the normal difficulty:

• Frag grenade: 25-32
  
• Pipe bomb: 22-23
  
• Molotov: 10-13
  
• Proximity mine: 30
  
• Proximity bomb: 20
  
• Attractor bomb (distractions): 20

If you can't handle the freaks here and there is no desire to fight with a melee weapon, then, having other equipment with you, this guide will make it easier to solve the problem.
Sorry for my English.