I'm new to backtrader and coding in general, I managed to add indicator to a dataset and would like to build my strategy around this and more indicators and parameters in the future this is my code rn:

class _StochasticBase(bt.Indicator):
lines = ('percK', 'percD',)
params = (('period', 14), ('period_dfast', 3), ('movav', bt.indicators.SMA),
          ('upperband', 80.0), ('lowerband', 20.0),
          ('safediv', False), ('safezero', 0.0))

plotlines = dict(percD=dict(_name='%D', ls='--'),
                 percK=dict(_name='%K'))

def _plotlabel(self):
    plabels = [self.p.period, self.p.period_dfast]
    plabels += [self.p.movav] * self.p.notdefault('movav')
    return plabels

def _plotinit(self):
    self.plotinfo.plotyhlines = [self.p.upperband, self.p.lowerband]

def init(self):
    highesthigh = Highest(self.data.high, period=self.p.period)
    lowestlow = Lowest(self.data.low, period=self.p.period)
    knum = self.data.close - lowestlow
    kden = highesthigh - lowestlow
    if self.p.safediv:
        self.k = 100.0 * bt.DivByZero(knum, kden, zero=self.p.safezero)
    else:
        self.k = 100.0 * (knum / kden)
    self.d = self.p.movav(self.k, period=self.p.period_dfast)

    super(_StochasticBase, self).init()

class StochasticFast(_StochasticBase):
def init(self):
super(StochasticFast, self).init()
self.lines.percK = self.k
self.lines.percD = self.d

I want to make an strategy based on the two lines generated from the indicator and backtest from there but when I create my strategy class I don't know how to import the indicators to it (like I said I'm new to coding)
Also I have a RSI indicator and another separate CI that I've added but I don't know how to bring those two in my strategy as well and mix em together, thanks in advance