Question about maintenance and service Checks / check booklet

Hi guys, I’m not the car expert yet and therefore I’m looking for help here in the forum regarding actually necessary maintenance and precautionary repairs/parts exchange. To the car: I have an end-2015 Avensis with meanwhile 50,000 km on the clock (diesel 143 hp, 6 gear manual transmission). I made a 40,000 km service in HH Bergedorf in mid-2018 and for this about 420 € gross moaned (last service in the warranty period) and do not want to repeat this! The rest was pure nonsense (sample ride, clear sightings fill in. I made the washing water especially brim full before, nevertheless they took a few euros. They then said that they had to test the washing machine, I was mega sour). Apart from the price, I didn’t like the service at all: I got my car with new advertisement on the license plate (not with car dealership), all belts were plugged in, the ventilation system was This is how you give the car back to a customer, PRIMA! Since I don’t have a chance at such high prices, I wanted to ask what you actually have to do the next 50,000 km. As I said, now it has 50,000 km down. I had an oil change made via Groupon at 44,000 km in Jan. 2020 (approx.50 €). Now to the main questions of the necessary maintenance points: According to the service booklet: – The fuel filter should probably be at 60 Tkm. – Air conditioning filter every 20 Tkm (Is that the interior air filter behind the glove compartment?) – Cooling liquid at 160 Tkm –> still lasts – Clutch liquid 120 Tkm –> also lasts When should I change the brake fluid (we changed in mid-2018)? Since the car now has 50,000 km down, the last oil change was before about 6,000 km, now only the fuel filter at 60 Tkm and possibly then also the air conditioning filter on me, or have ic h forget something elementary? When should you change the brake fluid and when should you have the next oil change? Greetings! the Chris