By Bret Kenwell Lyft stock is falling by more than 20% after reporting earnings. Here’s the must-hold level it needs to stay above to avoid a fall to $10 (or lower). Lyft (LYFT) – Get Free Report stock is getting rocked on Tuesday, down about 20% so far on the day after reporting earnings. Despite today’s decline, more losses could be on the way if the stock fails to hold a key support level. When Uber (UBER) – Get Free Report reported its quarterly results last week, shares initially climbed 12%. However, we outlined a key resistance level on the chart and we’ve since seen the stock cough up …